You want your AI coding assistant to send email. Maybe it's notifying teammates, following up with customers, or handling support. Here's every email MCP server we could find, what each one does, and which one fits your workflow.
| MCP Server | Email Provider | Human Review | Best For |
|---|---|---|---|
| TextForge | Gmail | Yes (mandatory) | Personal/business email where mistakes matter |
| Resend MCP | Resend API | No | Transactional email, HTML newsletters, bulk sends |
| Gmail MCP Server | Gmail | No | Direct Gmail access for reading and sending |
| Mailtrap MCP | Mailtrap | No | Development/testing email workflows |
| ClaudePost | Any IMAP/SMTP | No | Custom email providers, self-hosted mail servers |
| Outlook MCP | Microsoft 365 | No | Outlook/Microsoft 365 users |
The only email MCP server we found that includes a human approval step. When your agent calls create_draft, the email goes into a review queue instead of sending. You get a notification (Slack, Discord, or any webhook), review the draft, edit if you want, and approve it. It sends from your Gmail account.
Beyond approval, your agent can read inbox threads, search email, and handle attachments. Agents write Markdown; TextForge converts it to formatted HTML email. The Pro tier lets you restrict which parts of your inbox the AI can see using label filtering. Works with Claude Code, Cursor, Windsurf, VS Code, Cline, Zed, OpenClaw, and any MCP client. Pricing is $9.99/mo (Solo) or $19.99/mo (Pro) after a 7-day trial.
Disclosure: we built TextForge.
Resend is a developer-focused email API, and their official MCP server gives your agent the full API: HTML emails, contact management, scheduled broadcasts, attachments, domain configuration. The API is clean and the docs are good.
This is purpose-built for programmatic email delivery. SPF, DKIM, deliverability, bounce management are all handled. If your agent sends system notifications, order confirmations, or marketing campaigns, Resend is a strong pick. It sends immediately with no approval step, which is fine for templated transactional email but not ideal for AI-generated personal correspondence. Free tier gives you 3,000 emails/month; paid plans start at $20/mo.
A community-maintained MCP server that connects to Gmail via OAuth. Read, send, search, manage labels. The most direct way to give an AI agent full access to a Gmail account.
"Full access" is both the strength and the risk. Once the agent has OAuth credentials, it can read and send anything with no guardrails. Community-maintained, not officially backed by Google. Free and open source.
Mailtrap is primarily an email testing service. Their MCP server is most useful during development when you want to verify AI-generated email content without actually delivering it. They also support production sending. Free tier available, paid from $15/mo.
Open-source MCP server that works with any IMAP/SMTP provider. If you run your own mail server or use Fastmail or anything that supports IMAP/SMTP, ClaudePost is how you connect your agent. It can search, read, analyze, and send. No approval step, and it needs IMAP/SMTP credentials (broader access than OAuth scopes). Free.
Composio's MCP server for Microsoft 365 via the Microsoft Graph API. Email, calendar, and contacts for Outlook users. If your organization runs on Microsoft 365, this is the connection path. Tied to Composio's platform and pricing. No approval step.
Two questions:
You can mix and match. TextForge for customer-facing email where review matters. Resend for automated notifications where speed matters.
The only email MCP server with mandatory human approval. 7-day free trial.