Official
Send transactional and broadcast emails via the official Resend MCP.
resend, email, transactional, broadcast
Best Email MCP Servers in 2026
Best email MCP servers for Gmail, Outlook, and Fastmail. Let AI agents triage your inbox, draft replies, and search threads — verified for 2026.
About Email MCP servers
Email MCP servers connect an AI agent to the inbox most knowledge workers still spend a third of their day inside — Gmail, Outlook, Fastmail, and the triage tools around them like Fyxer and Superhuman. The best MCP servers for email expose the operations an executive assistant would: search across recent threads, summarise an unread bucket, draft a reply in the right voice, and surface the messages that actually need a human decision today.
Choose by mail provider and trust level. Gmail and Outlook MCPs are the right defaults — both support label-scoped or folder-scoped tokens so the agent can only see the inbox you point it at. Fastmail and ProtonMail MCPs exist where privacy posture matters more than feature coverage. Triage layers like Fyxer add a learned-preference model on top. Avoid wiring an email MCP into an autonomous agent loop without a confirmation step on every send — the embarrassing-reply scenario is the predictable failure.
Common mistakes: granting full mailbox scope when a single label or folder would do, letting the agent auto-send instead of drafting, and forgetting that mail APIs charge per call at scale — set a daily budget on long-running agents. Every MCP below documents the OAuth scopes it requests and which operations involve outbound messages. Start with read-only access to one label, prove the triage flow, then add draft-and-confirm before any auto-send capability.
All Email MCPs
5 MCPs ranked by popularity. Filter by attribute or search by name.
5 of 5 MCPs
| # | MCP | Tags | Setup | Complexity | Labels | |
|---|---|---|---|---|---|---|
| 1 | Resend Send transactional and broadcast emails via the official Resend MCP. | resend, email | 2 min | Low | Official | |
| 2 | Mailgun Manage Mailgun messaging, domains, webhooks, and analytics from an AI agent. | mailgun, email | 5 min | Low | Official | |
| 3 | Postmark Send transactional email from an AI agent — verified deliverability, audit-friendly. | email, postmark | 5 min | Low | ||
| 4 | SendGrid Send email and inspect deliverability via SendGrid from an AI agent. | email, sendgrid | 10 min | Medium | ||
| 5 | Gmail Send, read, search, and label Gmail from an AI agent — community MCP with auto-OAuth. | gmail, email | 15 min | Medium |
Top Email MCPs ranked
Detailed cards with setup time, complexity, and key labels.
Official
Manage Mailgun messaging, domains, webhooks, and analytics from an AI agent.
mailgun, email, transactional, analytics
Send transactional email from an AI agent — verified deliverability, audit-friendly.
email, postmark, transactional, deliverability
Send email and inspect deliverability via SendGrid from an AI agent.
email, sendgrid, transactional, deliverability
Send, read, search, and label Gmail from an AI agent — community MCP with auto-OAuth.
gmail, email, community, google
Also in the ChatGPT Apps directory
2 Email brands are available as one-click ChatGPT Apps. These are not ranked alongside the editorial picks above — they're listings from chatgpt.com/apps surfaced here for brand-search continuity.
FAQ: Email MCPs
Which email MCP should I install first?
Gmail if you use Google Workspace, Outlook if you use Microsoft 365. Both expose read, search, draft, and send tools — drafts only is the safe default until you trust the agent with send.
Is it safe to let an agent send email?
Only with a human-in-the-loop step. The standard pattern is draft-only by default — the agent prepares the email; a human approves and sends from the existing client.