The real catalog of tools for AI agents

Find and verify work emails with live SMTP checks and catch-all detection. Free 10 calls/day.

Email IMAP/SMTP MCP server: iCloud, Gmail, Yahoo, Outlook, and custom IMAP providers

Multi-account IMAP/SMTP email server with 22 tools for reading, sending, searching, and organizing.

MCP server for Aruba email and calendar via IMAP/SMTP/CalDAV

Check SPF/DKIM/DMARC/BIMI, blacklists, SMTP/IMAP; DNS lookups; generate email DNS records.

Unofficial Proton Mail MCP — send, read, search & organize email over SMTP and IMAP

IMAP/SMTP email MCP server — 52 tools, stdio + HTTP, IMAP IDLE push, multi-account, AI triage.

Bulk email verification: live SMTP mailbox check, MX, catch-all, disposable and role detection.

Free transactional email + SMTP relay. Agents self-signup, no API key needed to start.

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Email for AI agents — read inbox (IMAP), search, and send (SMTP).

Letterkeel: send email from your own domain via SMTP, Resend, SendGrid, Mailgun, Postmark

Teaches AI to write HTML email that renders in Outlook, Gmail, and Apple Mail. 19 rules, 6 comps.

Local email connectivity for AI agents — read, draft, send, and organize Outlook mail via MCP

Unified email MCP server for Gmail, Outlook, iCloud, and IMAP with batch operations

Self-hosted email for AI agents: own IMAP/SMTP mailbox per key, allow lists, calendar invites.

Never-stored live email: read, send and triage Gmail, Outlook / Microsoft 365, or any IMAP mailbox.

Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.

Audit and build email signatures that survive Gmail, Outlook desktop and Apple Mail.

Read, search, draft, send, and organize email through Gmail, Outlook, and IMAP/SMTP mailboxes.