Skip to main content
Glama

20 Best Email MCP Servers, Compared (September 2026)

Updated 20 of 2,148 Email servers in the Glama registryRebuilt weekly

The short answer

Most readers should reach for IMAP MCP Server. It works with any provider that supports IMAP and SMTP, exposes 40 tools with grade A descriptions, and is actively maintained: last commit 0 days ago and 88 commits in the last 12 weeks. If your team is on Google Workspace and you also need Calendar, Docs, Sheets, Slides, Chat, Forms and Drive, Google Workspace MCP Server is the better answer with 122 tools and 451 commits in the last 12 weeks.

Whichever you choose, give it the narrowest access that still works (a read-only credential, a replica, a scratch account), and widen it only once you have watched what your agent actually asks for.

Glama operates the MCP registry these numbers are measured from, and sells MCP hosting and a gateway. No position on this page is paid for. How the registry is built.

Quick picks

  • 1Email Sending MCP : Running Resend and wanting agent-driven email operations: it exposes 99 tools for broadcasts, automations, contacts, and API keys.
  • 2Google Workspace MCP Server - Control Gmail, Calendar, Docs, Sheets, Slides, Chat, Forms & Drive : A team that wants one Workspace MCP deployment for all users: it supports OAuth 2.1 multi-user auth, stateless deployment, and 122 tools.
  • 3apple-mail-mcp : When an AI assistant must manage a user's local Apple Mail on macOS: this server's AppleScript tools cover reading, searching, sending, and organizing.
  • 4MCP Agent Mail : Multi-agent coding projects where agents need asynchronous messaging and conflict prevention: it provides identities, inbox/outbox, searchable history, and advisory file leases.
  • 5MCP Email Server : Email automation where outbound recipients and inbound senders must be allowlisted: it exposes send, mailbox, attachment, move, archive, and flag tools.

Which one, for your situation

Your situationWhat to use
I want one server for my existing Google Workspace accountUse Google Workspace MCP Server: it exposes 122 tools for Gmail, Calendar, Docs, Sheets, Slides, Chat, Forms and Drive, with 451 commits in the last 12 weeks.
I need generic email search, send, and cleanup across providersUse IMAP MCP Server: it exposes 40 tools for search, read, move, flag, bulk delete, and spam filtering, and had a commit 0 days ago.
I am a Resend user and want agent-driven email operationsUse Email Sending MCP: it is built for Resend, exposes 99 tools, and had a commit 4 days ago.
I use Apple Mail on macOS and want local email managementUse apple-mail-mcp: it exposes 50 tools, has grade A descriptions, and had a commit 0 days ago with 262 commits in the last 12 weeks.
I need a disposable mailbox for agents to receive verification codesUse AgenticMail: it runs local mailboxes with send, receive, search, reply, and relay tools, and exposes 100 tools.
We need enterprise Microsoft 365 mail, files, and calendar automationUse Microsoft 365 MCP Server: it exposes 188 tools, had a commit 1 day ago, and had 29,523 npm downloads in a typical week.

Top MCP servers for Email

Best forProfile
1
resend/resend-mcp
Running Resend and wanting agent-driven email operations: it exposes 99 tools for broadcasts, automations, contacts, and API keys.Community favourite566+104 days ago90.0
2
taylorwilsdon/google_workspace_mcp
A team that wants one Workspace MCP deployment for all users: it supports OAuth 2.1 multi-user auth, stateless deployment, and 122 tools.Community favourite3,086+1363 days ago88.1
3
sweetrb/apple-mail-mcp
When an AI assistant must manage a user's local Apple Mail on macOS: this server's AppleScript tools cover reading, searching, sending, and organizing.Community favourite67+16today85.3
4
Dicklesworthstone/mcp_agent_mail
Multi-agent coding projects where agents need asynchronous messaging and conflict prevention: it provides identities, inbox/outbox, searchable history, and advisory file leases.Community favourite2,115+555 days ago83.7
5
Wh1isper/mcp-email-server
Email automation where outbound recipients and inbound senders must be allowlisted: it exposes send, mailbox, attachment, move, archive, and flag tools.Community favourite317+232 days ago80.6
6
nikolausm/imap-mcp-server
Multi-account email management with heavy triage and cleanup: it exposes 40 tools for search, read, move, flag, bulk delete, and spam filtering.Community favourite76+14today79.3
7
patrickfreyer/apple-mail-mcp
Apple Mail users on macOS who need an assistant to read, search, compose, organize, and analyze email across all configured accounts: it exposes 26 tools.Emerging193+2327 days ago78.5
8
ArtyMcLabin/Gmail-MCP-Server
Daily Claude Code email workflows on a local machine: reply threading is fixed so replies land in the correct thread.Community favourite226+1718 days ago76.9
9
agenticmail/agenticmail
Multi-agent coordination and verification-code workflows: it gives agents real local mailboxes with send, receive, search, reply, and relay tools.Emerging192+2434 days ago75.8
10
codefuturist/email-mcp
An AI assistant operating a real mailbox end to end: it exposes send, search, move, label, schedule and calendar tools for multiple accounts.Abandoned but popular102+17102 days ago75.6
11
littlebearapps/outlook-assistant
For a personal Outlook.com or Microsoft 365 user who needs email, calendar, contacts, and settings in one MCP server: it exposes 22 tools.Emerging36+630 days ago75.3
12
Softeria/ms-365-mcp-server
Enterprises automating Microsoft 365 files, spreadsheets, and mail: it exposes 188 tools spanning Excel, OneDrive, Outlook, and more.Community favourite940+49yesterday72.4
13
yunfeizhu/mcp-mail-server
Managing email from an MCP client via natural language: it provides IMAP/SMTP operations for search, send, reply, and attachments.Steady45+112 days ago70.9
14
TKasperczyk/thunderbird-mcp
Thunderbird users who want an AI assistant to search and read mail and draft replies locally, with sending guarded by a review window.Community favourite297+513 days ago69.8
15
ActiveCampaign/postmark-mcp
For teams with a Postmark account that need an AI assistant to send and track email: it exposes sending, template, and delivery-stat tools.Community favourite54+948 days ago68.8
16
OpenOSINT/OpenOSINT
A security researcher who wants broad OSINT investigations from Claude: this server exposes 23 tools covering email, username, breach, IP, domain, phone, and entity graphs.Community favourite1,492+1664 days ago68.4
17
anypost/emailmd
For an AI assistant writing markdown emails that must be Outlook- and Gmail-safe: it renders email-safe HTML and lints drafts for deliverability.Community favourite1,329+464 days ago67.0
18
mailgun/mailgun-mcp-server
An existing Mailgun account where an AI assistant must send email and diagnose delivery: it exposes messaging, domain, webhook, and analytics tools.Community favourite57+237 days ago66.9
19
ryaker/outlook-mcp
Managing Outlook email and calendar plus OneDrive files from Claude: it documents send, search, read, event, upload, and share tools.Abandoned but popular423+21153 days ago66.2
20
Atomic-Mail/atomic-mail-agentic
An autonomous agent that needs its own inbox: it can register one via proof-of-work and then manage it through JMAP.Community favourite259-1619 days ago64.7

The ranking, with the evidence

Each position is a weighted mean of adoption (40%), maintenance (24%), momentum (14%), tool description quality (13%) and trust (9%), multiplied by three attenuators: how directly the server is about Email (named for it, declaring it, tagged with it, or merely mentioning it), whether its repository is still moving, and how much independent evidence of adoption it has. Open the score on any entry to see every number, including the ones marked ≈, which were imputed from the median of the other candidates rather than measured. The maintenance grade on each entry is mostly issue responsiveness, release recency and open security alerts rather than commits, so a recent commit beside a low grade is two different measurements rather than a contradiction.

  • Abandoned but popular: People use it, but its default branch has stopped moving. Fine to keep running, risky to adopt.
  • Community favourite: Widely adopted and still actively maintained.
  • Dormant: Neither changing nor widely adopted. Here because it still matches the search.
  • Emerging: Small audience, growing quickly, maintained. The bet with the most upside.
  • Steady: Maintained, modest audience, no surprises in either direction.
  • 1

    Email Sending MCP

    Community favourite▲ 4
    resend/resend-mcp ↗

    Best for: Running Resend and wanting agent-driven email operations: it exposes 99 tools for broadcasts, automations, contacts, and API keys.

    The README documents both a hosted remote server and a local npx server, and the server exposes 99 tools for Resend work including broadcasts, automations, contacts, API keys, and editor presence. Before choosing it, know that local mode requires a Resend API key and a verified domain.

    GitHub stars
    566
    Stars / 30 days
    +10
    npm / typical week
    13.3K
    Tools exposed
    99
    Last commit
    4 days ago
    Commits / 12 weeks
    41
    Maintenance grade
    A
    Tool descriptions
    A
    Score 90.0: show every number behind it
    • Adoption98 / 100 · weight 40%
      • GitHub stars69
      • npm downloads88
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum59 / 100 · weight 14%
      • Stars gained, relative to size48
      • Stars gained, absolute42
      • npm download trend100
    • Tool quality73 / 100 · weight 13%
      • Tool description quality65
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    90.0
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    90.0
  • 2

    Google Workspace MCP Server - Control Gmail, Calendar, Docs, Sheets, Slides, Chat, Forms & Drive

    Community favourite▼ 1
    taylorwilsdon/google_workspace_mcp ↗

    Best for: A team that wants one Workspace MCP deployment for all users: it supports OAuth 2.1 multi-user auth, stateless deployment, and 122 tools.

    This server exposes 122 MCP tools for Gmail, Drive, Calendar, Docs, Sheets, Slides, Forms, Tasks, Contacts, and Chat, and documents stdio and streamable HTTP modes with OAuth 2.1 multi-user auth. The main requirement before choosing it is a Google Cloud OAuth client and configured redirect URIs and scopes.

    GitHub stars
    3,086
    Stars / 30 days
    +136
    npm / typical week
    Ships no npm package
    Tools exposed
    122
    Last commit
    3 days ago
    Commits / 12 weeks
    451
    Maintenance grade
    A
    Tool descriptions
    B
    Score 88.1: show every number behind it
    • Adoption87 / 100 · weight 40%
      • GitHub stars87
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum86 / 100 · weight 14%
      • Stars gained, relative to size85
      • Stars gained, absolute86
      • npm download trendnot measured
        no npm download history
    • Tool quality63 / 100 · weight 13%
      • Tool description quality55
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    88.1
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    88.1
  • 3

    apple-mail-mcp

    Community favourite▼ 1
    sweetrb/apple-mail-mcp ↗

    Best for: When an AI assistant must manage a user's local Apple Mail on macOS: this server's AppleScript tools cover reading, searching, sending, and organizing.

    The server exposes 50 tools for reading, searching, sending, replying to, forwarding, organizing, and deleting messages, plus mailbox, attachment, rule, and smart-mailbox operations. It assumes macOS with the local Mail app, and first use prompts the user to allow automation of Mail.app.

    GitHub stars
    67
    Stars / 30 days
    +16
    npm / typical week
    1.7K
    Tools exposed
    50
    Last commit
    today
    Commits / 12 weeks
    262
    Maintenance grade
    A
    Tool descriptions
    A
    Score 85.3: show every number behind it
    • Adoption75 / 100 · weight 40%
      • GitHub stars46
      • npm downloads69
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum74 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute49
      • npm download trend56
    • Tool quality91 / 100 · weight 13%
      • Tool description quality83
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    85.3
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    85.3
  • 4

    MCP Agent Mail

    Community favourite▼ 1
    Dicklesworthstone/mcp_agent_mail ↗

    Best for: Multi-agent coding projects where agents need asynchronous messaging and conflict prevention: it provides identities, inbox/outbox, searchable history, and advisory file leases.

    Agent Mail is an HTTP-only FastMCP server that gives coding agents identities, inbox/outbox messaging, searchable message history, and advisory file leases, storing artifacts in Git and indexing with SQLite. It assumes a FastMCP client, and its installer also sets up Beads Rust and Beads Viewer unless explicitly skipped.

    GitHub stars
    2,115
    Stars / 30 days
    +55
    npm / typical week
    Ships no npm package
    Tools exposed
    never inspected
    Last commit
    5 days ago
    Commits / 12 weeks
    17
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 83.7: show every number behind it
    • Adoption83 / 100 · weight 40%
      • GitHub stars83
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum67 / 100 · weight 14%
      • Stars gained, relative to size64
      • Stars gained, absolute71
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    83.7
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    83.7
  • 5

    MCP Email Server

    Community favourite▼ 1
    Wh1isper/mcp-email-server ↗

    Best for: Email automation where outbound recipients and inbound senders must be allowlisted: it exposes send, mailbox, attachment, move, archive, and flag tools.

    It connects to accounts over IMAP and SMTP and exposes 14 tools for account and mailbox listing, metadata and content reads, send, save to mailbox, delete, flags, move, archive, and attachment download. It is a Python package run through uvx, so the environment installing it needs uv/uvx available.

    GitHub stars
    317
    Stars / 30 days
    +23
    npm / typical week
    Ships no npm package
    Tools exposed
    14
    Last commit
    2 days ago
    Commits / 12 weeks
    43
    Maintenance grade
    A
    Tool descriptions
    A
    Score 80.6: show every number behind it
    • Adoption63 / 100 · weight 40%
      • GitHub stars63
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum77 / 100 · weight 14%
      • Stars gained, relative to size91
      • Stars gained, absolute55
      • npm download trendnot measured
        no npm download history
    • Tool quality91 / 100 · weight 13%
      • Tool description quality83
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    80.6
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    80.6
  • 6

    IMAP MCP Server

    Community favourite▲ 14
    nikolausm/imap-mcp-server ↗

    Best for: Multi-account email management with heavy triage and cleanup: it exposes 40 tools for search, read, move, flag, bulk delete, and spam filtering.

    It exposes 40 tools covering IMAP and SMTP operations, from adding and testing accounts to searching, reading, sending, replying, forwarding, moving, flagging, bulk deleting, and spam filtering emails. It requires Node.js 22.12 or newer and stores accounts encrypted in a shared local JSON file that all run modes read from.

    GitHub stars
    76
    Stars / 30 days
    +14
    npm / typical week
    434
    Tools exposed
    40
    Last commit
    today
    Commits / 12 weeks
    88
    Maintenance grade
    A
    Tool descriptions
    A
    Score 79.3: show every number behind it
    • Adoption63 / 100 · weight 40%
      • GitHub stars47
      • npm downloads56
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum80 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute47
      • npm download trend84
    • Tool quality76 / 100 · weight 13%
      • Tool description quality68
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    79.3
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    79.3
  • 7

    Apple Mail MCP Server

    Emerging▼ 1
    patrickfreyer/apple-mail-mcp ↗

    Best for: Apple Mail users on macOS who need an assistant to read, search, compose, organize, and analyze email across all configured accounts: it exposes 26 tools.

    It exposes 26 tools for Apple Mail covering inbox listing, unread counts, search, threads, drafts, send, reply, forward, move, trash, attachments, mailboxes, sync, statistics, export, and dashboard views. Before choosing it, note that it requires macOS with Apple Mail configured and Python 3.10+, and it operates on whatever accounts are already set up in Mail.app.

    GitHub stars
    193
    Stars / 30 days
    +23
    npm / typical week
    Ships no npm package
    Tools exposed
    26
    Last commit
    27 days ago
    Commits / 12 weeks
    34
    Maintenance grade
    A
    Tool descriptions
    A
    Score 78.5: show every number behind it
    • Adoption57 / 100 · weight 40%
      • GitHub stars57
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum82 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute56
      • npm download trendnot measured
        no npm download history
    • Tool quality85 / 100 · weight 13%
      • Tool description quality77
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    78.5
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    78.5
  • 8

    Gmail MCP Server (ArtyMcLabin fork)

    Community favouriteNo change
    ArtyMcLabin/Gmail-MCP-Server ↗

    Best for: Daily Claude Code email workflows on a local machine: reply threading is fixed so replies land in the correct thread.

    It is a local stdio Gmail MCP server with thread-level tools, draft lifecycle tools, reply-all, phishing reports, email download, send-as aliases, and configurable OAuth scopes. It assumes a local setup where the LLM client already has shell and filesystem access.

    GitHub stars
    226
    Stars / 30 days
    +17
    npm / typical week
    210
    Tools exposed
    never inspected
    Last commit
    18 days ago
    Commits / 12 weeks
    23
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 76.9: show every number behind it
    • Adoption63 / 100 · weight 40%
      • GitHub stars59
      • npm downloads25
        downloads show none of the weekday rhythm human traffic has; halved
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum77 / 100 · weight 14%
      • Stars gained, relative to size89
      • Stars gained, absolute51
      • npm download trend87
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    76.9
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    76.9
  • 9

    AgenticMail

    Emerging▼ 2
    agenticmail/agenticmail ↗

    Best for: Multi-agent coordination and verification-code workflows: it gives agents real local mailboxes with send, receive, search, reply, and relay tools.

    AgenticMail runs a local mail server with disposable inboxes and exposes 100 tools, including send_email, list_inbox, read_email, search_emails, reply_email, forward_email, and manage_contacts. Choosing it means running and keeping that local server available, and sending real internet mail requires either Gmail/Outlook relay or Cloudflare domain setup, both configured with a master API key.

    GitHub stars
    192
    Stars / 30 days
    +24
    npm / typical week
    Ships no npm package
    Tools exposed
    100
    Last commit
    34 days ago
    Commits / 12 weeks
    23
    Maintenance grade
    A
    Tool descriptions
    A
    Score 75.8: show every number behind it
    • Adoption57 / 100 · weight 40%
      • GitHub stars57
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum82 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute56
      • npm download trendnot measured
        no npm download history
    • Tool quality71 / 100 · weight 13%
      • Tool description quality63
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    75.8
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    75.8
  • 10

    Email MCP Server

    Abandoned but popular▲ 9
    codefuturist/email-mcp ↗

    Best for: An AI assistant operating a real mailbox end to end: it exposes send, search, move, label, schedule and calendar tools for multiple accounts.

    The server exposes 49 MCP tools for reading, searching, sending, replying, forwarding, moving, deleting, labeling, analyzing, and extracting calendar events from email over IMAP and SMTP. Before choosing it, know that it requires Node.js 22 or later and a TOML config at ~/.config/email-mcp/config.toml.

    GitHub stars
    102
    Stars / 30 days
    +17
    npm / typical week
    3.4K
    Tools exposed
    49
    Last commit
    102 days ago
    Commits / 12 weeks
    0
    Maintenance grade
    D
    Tool descriptions
    A
    Score 75.6: show every number behind it
    • Adoption83 / 100 · weight 40%
      • GitHub stars50
      • npm downloads75
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance57 / 100 · weight 24%
      • Last commit touching this server88
        dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 9 days ago, which counts every ref; the stored date would have published 9 days ago
      • Repository maintenance grade30
      • Commit cadence5
    • Momentum60 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute51
      • npm download trend0
    • Tool quality88 / 100 · weight 13%
      • Tool description quality80
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    75.6
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    75.6
  • 11

    outlook-mcp

    Emerging▼ 2
    littlebearapps/outlook-assistant ↗

    Best for: For a personal Outlook.com or Microsoft 365 user who needs email, calendar, contacts, and settings in one MCP server: it exposes 22 tools.

    It exposes 22 tools for Outlook email, calendar, contacts, folders, rules, categories, mailbox settings, shared mailboxes, and meeting rooms through the Microsoft Graph API. Before choosing it, note that it assumes an Outlook account: the README says it works with personal Outlook.com and work/school Microsoft 365 accounts.

    GitHub stars
    36
    Stars / 30 days
    +6
    npm / typical week
    224
    Tools exposed
    22
    Last commit
    30 days ago
    Commits / 12 weeks
    18
    Maintenance grade
    B
    Tool descriptions
    A
    Score 75.3: show every number behind it
    • Adoption56 / 100 · weight 40%
      • GitHub stars39
      • npm downloads50
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance92 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade80
      • Commit cadence85
    • Momentum67 / 100 · weight 14%
      • Stars gained, relative to size72
      • Stars gained, absolute33
      • npm download trend100
    • Tool quality96 / 100 · weight 13%
      • Tool description quality88
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    75.3
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    75.3
  • 12

    Microsoft 365 MCP Server

    Community favourite▼ 2
    Softeria/ms-365-mcp-server ↗

    Best for: Enterprises automating Microsoft 365 files, spreadsheets, and mail: it exposes 188 tools spanning Excel, OneDrive, Outlook, and more.

    The server exposes 188 tools that call Microsoft Graph for Excel, OneDrive, mail, and calendar, with read-only mode and allowed-scope filtering. It requires Node.js 20 or newer to run.

    GitHub stars
    940
    Stars / 30 days
    +49
    npm / typical week
    29.5K
    Tools exposed
    188
    Last commit
    yesterday
    Commits / 12 weeks
    92
    Maintenance grade
    A
    Tool descriptions
    B
    Score 72.4: show every number behind it
    • Adoption100 / 100 · weight 40%
      • GitHub stars74
      • npm downloads95
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum85 / 100 · weight 14%
      • Stars gained, relative to size88
      • Stars gained, absolute69
      • npm download trend100
    • Tool quality61 / 100 · weight 13%
      • Tool description quality53
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    92.8
    × relevance: the keyword is declared here
    0.78
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    72.4
  • 13

    MCP Mail Server

    Steady▼ 2
    yunfeizhu/mcp-mail-server ↗

    Best for: Managing email from an MCP client via natural language: it provides IMAP/SMTP operations for search, send, reply, and attachments.

    It connects to email accounts via IMAP/SMTP and documents natural-language operations for searching, reading, sending, replying, organizing, and handling attachments. It requires an account with IMAP/SMTP enabled and only supports password or app-password authentication, not OAuth2.

    GitHub stars
    45
    Stars / 30 days
    +1
    npm / typical week
    298
    Tools exposed
    never inspected
    Last commit
    12 days ago
    Commits / 12 weeks
    15
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 70.9: show every number behind it
    • Adoption59 / 100 · weight 40%
      • GitHub stars42
      • npm downloads53
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance97 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence85
    • Momentum45 / 100 · weight 14%
      • Stars gained, relative to size34
      • Stars gained, absolute15
      • npm download trend100
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    70.9
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    70.9
  • 14

    Thunderbird MCP

    Community favourite▼ 1
    TKasperczyk/thunderbird-mcp ↗

    Best for: Thunderbird users who want an AI assistant to search and read mail and draft replies locally, with sending guarded by a review window.

    The server translates between MCP's stdio protocol and a local HTTP server embedded in Thunderbird, and exposes tools for searching and reading mail, composing messages, managing filters, and working with contacts and calendars. Before choosing it, note that it depends on Thunderbird and the companion extension being installed locally; the bridge locates the extension's port and session token through a connection file.

    GitHub stars
    297
    Stars / 30 days
    +51
    npm / typical week
    Ships no npm package
    Tools exposed
    never inspected
    Last commit
    3 days ago
    Commits / 12 weeks
    60
    Maintenance grade
    A
    Tool descriptions
    Not graded
    Score 69.8: show every number behind it
    • Adoption62 / 100 · weight 40%
      • GitHub stars62
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum88 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute69
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust0 / 100 · weight 9%
      • License0
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    69.8
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    69.8
  • 15

    Postmark MCP Server

    Community favourite▼ 3
    ActiveCampaign/postmark-mcp ↗

    Best for: For teams with a Postmark account that need an AI assistant to send and track email: it exposes sending, template, and delivery-stat tools.

    This server connects an MCP client to a Postmark account, with tools for sending and searching email, managing templates and suppressions, and inspecting delivery stats, bounces, webhooks, and server info. It requires Node.js v20 or higher, a Postmark server token, and configured default sender and message stream values.

    GitHub stars
    54
    Stars / 30 days
    +9
    npm / typical week
    728
    Tools exposed
    never inspected
    Last commit
    48 days ago
    Commits / 12 weeks
    4
    Maintenance grade
    C
    Tool descriptions
    Not graded
    Score 68.8: show every number behind it
    • Adoption67 / 100 · weight 40%
      • GitHub stars44
      • npm downloads61
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance70 / 100 · weight 24%
      • Last commit touching this server88
        dated from the last commit on the default branch, re-read from GitHub at publication; github.com shows a push 4 days ago, which counts every ref; the stored date would have published 18 days ago
      • Repository maintenance grade55
      • Commit cadence40
    • Momentum52 / 100 · weight 14%
      • Stars gained, relative to size86
      • Stars gained, absolute40
      • npm download trend5
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    68.8
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    68.8
  • 16

    openosint

    Community favourite▼ 2
    OpenOSINT/OpenOSINT ↗

    Best for: A security researcher who wants broad OSINT investigations from Claude: this server exposes 23 tools covering email, username, breach, IP, domain, phone, and entity graphs.

    OpenOSINT exposes 23 OSINT tools as an MCP server, including email, username, breach, WHOIS, IP, subdomain, phone, Shodan, dork, Pastebin, VirusTotal, Censys, GitHub, DNS, and graph tools, and its README documents a REPL, CLI, and browser Web UI. Several tools require third-party API keys such as HIBP, Shodan, VirusTotal, and Bright Data, so it is not fully functional out of the box.

    GitHub stars
    1,492
    Stars / 30 days
    +166
    npm / typical week
    Ships no npm package
    Tools exposed
    23
    Last commit
    4 days ago
    Commits / 12 weeks
    236
    Maintenance grade
    A
    Tool descriptions
    A
    Score 68.4: show every number behind it
    • Adoption79 / 100 · weight 40%
      • GitHub stars79
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum96 / 100 · weight 14%
      • Stars gained, relative to size100
      • Stars gained, absolute90
      • npm download trendnot measured
        no npm download history
    • Tool quality73 / 100 · weight 13%
      • Tool description quality65
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    87.7
    × relevance: the keyword is declared here
    0.78
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    68.4
  • 17

    emailmd

    Community favourite▲ 1
    anypost/emailmd ↗

    Best for: For an AI assistant writing markdown emails that must be Outlook- and Gmail-safe: it renders email-safe HTML and lints drafts for deliverability.

    It exposes three MCP tools: render, which converts emailmd markdown into email-safe HTML with a plain-text MIME part; lint, which flags deliverability, accessibility, and readability problems; and read_docs, which fetches emailmd documentation. The npm package is not published at the time of measurement, though the README documents a hosted MCP endpoint at https://www.emailmd.dev/api/mcp.

    GitHub stars
    1,329
    Stars / 30 days
    +46
    npm / typical week
    Ships no npm package
    Tools exposed
    3
    Last commit
    4 days ago
    Commits / 12 weeks
    63
    Maintenance grade
    A
    Tool descriptions
    A
    Score 67.0: show every number behind it
    • Adoption78 / 100 · weight 40%
      • GitHub stars78
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance100 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade100
      • Commit cadence100
    • Momentum71 / 100 · weight 14%
      • Stars gained, relative to size73
      • Stars gained, absolute68
      • npm download trendnot measured
        no npm download history
    • Tool quality91 / 100 · weight 13%
      • Tool description quality83
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    85.9
    × relevance: the keyword is declared here
    0.78
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    67.0
  • 18

    Mailgun MCP Server

    Community favourite▼ 3
    mailgun/mailgun-mcp-server ↗

    Best for: An existing Mailgun account where an AI assistant must send email and diagnose delivery: it exposes messaging, domain, webhook, and analytics tools.

    The server exposes 70 tools generated from Mailgun's OpenAPI spec, covering send/retrieve/resend messaging, domain and webhook management, and analytics/stats/log queries. It requires Node.js 20.12 or higher and a Mailgun API key, and exposes no delete operations, which limits unintended damage.

    GitHub stars
    57
    Stars / 30 days
    +2
    npm / typical week
    459
    Tools exposed
    70
    Last commit
    37 days ago
    Commits / 12 weeks
    5
    Maintenance grade
    C
    Tool descriptions
    C
    Score 66.9: show every number behind it
    • Adoption63 / 100 · weight 40%
      • GitHub stars44
      • npm downloads57
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance82 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade55
      • Commit cadence65
    • Momentum48 / 100 · weight 14%
      • Stars gained, relative to size39
      • Stars gained, absolute19
      • npm download trend100
    • Tool quality48 / 100 · weight 13%
      • Tool description quality40
      • Built and inspected by Glama100
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    66.9
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    66.9
  • 19

    M365 Assistant MCP Server

    Abandoned but popular▼ 3
    ryaker/outlook-mcp ↗

    Best for: Managing Outlook email and calendar plus OneDrive files from Claude: it documents send, search, read, event, upload, and share tools.

    The server uses OAuth 2.0 with the Microsoft Graph API and Power Automate API, and its README documents tools for email, calendar, OneDrive, and Power Automate. It assumes an Azure account and app registration, and authentication depends on OAuth credentials for Microsoft Graph and Power Automate.

    GitHub stars
    423
    Stars / 30 days
    +21
    npm / typical week
    downloads not counted
    Tools exposed
    never inspected
    Last commit
    153 days ago
    Commits / 12 weeks
    0
    Maintenance grade
    C
    Tool descriptions
    Not graded
    Score 66.2: show every number behind it
    • Adoption66 / 100 · weight 40%
      • GitHub stars66
      • npm downloadsnot measured
        npm publishes m365-mcp from debian777/m365-mcp
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance52 / 100 · weight 24%
      • Last commit touching this server68
      • Repository maintenance grade55
      • Commit cadence5
    • Momentum69 / 100 · weight 14%
      • Stars gained, relative to size79
      • Stars gained, absolute54
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integratesnot measured
        not published by the vendor it integrates
    Weighted mean of the five
    66.2
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    66.2
  • 20

    Atomic Mail Agentic

    Community favourite▼ 3
    Atomic-Mail/atomic-mail-agentic ↗

    Best for: An autonomous agent that needs its own inbox: it can register one via proof-of-work and then manage it through JMAP.

    Atomic Mail Agentic is an MCP integration for the Atomic Mail service; its README documents register, jmap_request and help tools and also lists a shell CLI, ClawHub and Dify plugin. Before choosing it, know that no npm package is published, so the documented install path is the MCP stdio configuration and an Atomic Mail account must be created through the proof-of-work signup.

    GitHub stars
    259
    Stars / 30 days
    -16
    npm / typical week
    Ships no npm package
    Tools exposed
    never inspected
    Last commit
    19 days ago
    Commits / 12 weeks
    160
    Maintenance grade
    B
    Tool descriptions
    Not graded
    Score 64.7: show every number behind it
    • Adoption60 / 100 · weight 40%
      • GitHub stars60
      • npm downloadsnot measured
        no npm package
      • Used through Glamanot measured
        not used through Glama in the last 30 days
    • Maintenance95 / 100 · weight 24%
      • Last commit touching this server100
      • Repository maintenance grade80
      • Commit cadence100
    • Momentum0 / 100 · weight 14%
      • Stars gained, relative to size0
      • Stars gained, absolute0
      • npm download trendnot measured
        no npm download history
    • Tool quality≈68 / 100 · weight 13%
      • Tool description quality≈68
        tool descriptions not yet scored
      • Built and inspected by Glamanot measured
        never built and inspected by Glama
    • Trust100 / 100 · weight 9%
      • License100
      • Published by the vendor it integrates100
    Weighted mean of the five
    64.7
    × relevance: the keyword is dedicated here
    1.00
    × continuity: actively changing
    1.00
    × evidence: widely adopted
    1.00
    Composite score
    64.7

Questions people ask

How do I choose between IMAP MCP Server and MCP Email Server?

For multi-account email triage and cleanup, IMAP MCP Server is the stronger pick: it exposes 40 tools, had a commit 0 days ago, and made 88 commits in the last 12 weeks. MCP Email Server exposes 14 tools, had a commit 2 days ago, and made 43 commits in the last 12 weeks, but no npm package is published. Its allowlist design also means outbound recipients and inbound senders are restricted.

What do I need to run Email Sending MCP from Resend?

It is built for Resend users, so you need Resend as your email service. The npm package resend-mcp had 13,290 downloads in a typical week, and the server had a commit 4 days ago. Its 99 tools cover broadcasts, automations, contacts, and API keys, so give an agent only the access it needs.

Is Google Workspace MCP Server easy to install without an npm package?

No npm package is published for it, so npm install is not an option. It supports OAuth 2.1 multi-user auth and stateless deployment, and it exposes 122 tools. It had a commit 3 days ago and 451 commits in the last 12 weeks.

What is the difference between ryaker/outlook-mcp and Microsoft 365 MCP Server?

Microsoft 365 MCP Server is the active choice: it exposes 188 tools, had a commit 1 day ago, 92 commits in the last 12 weeks, and 29,523 npm downloads in a typical week. ryaker/outlook-mcp is marked Abandoned but popular, with a last commit 153 days ago and 0 commits in the last 12 weeks.

Can any server give an agent a real inbox for verification codes?

Yes, AgenticMail runs a local mail server with disposable inboxes, so agents can receive real email and fetch verification codes without a third-party email API. It exposes 100 tools and had a commit 34 days ago with 23 commits in the last 12 weeks.

Other comparisons