SMTP alternatives

1

Proton Mail (unofficial)

by sethbang

B

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

2

Agenticmail

by agenticmail

B

Real email and SMS for AI agents — send mail, receive verification codes, drive a real inbox.

3

Imap

by nikolausm

A

IMAP/SMTP MCP server to search, read, organize, send, reply & forward email for AI assistants

4

Openagentemail

by openagentemail

B

Unlimited agent mailboxes — create identities, read/wait for mail, extract OTPs, send email.

5

Fluxmail

by fluxmailai

B

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

6

Agent Email

by UseJunior

A

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

7

Microsoft 365 Mail

by mindstone

A

Microsoft 365 Outlook mail via Graph: read, search, send, reply, forward, draft, move, delete.

8

Postfleet

by postfleet.ai

A

Give an AI agent its own email address: send, reply, read, and wait for mail.

9

owlpost

by smankoo

A

IMAP/SMTP email for iCloud, Gmail, Proton Bridge and more: search, read, follow threads, send.

Local-first, read-only MCP server for recall over your Gmail: search, contacts, threads, digests.

Local-first, read-only MCP server for recall over your Gmail: search, contacts, threads, digests.

12

Agent Inbox

by clize.ai

A

A real email inbox for AI agents: human-approved sends, untrusted-by-default inbound.

13

Mailbuttons

by mailbuttons.com

A

Governed email for AI agents: a sandbox inbox to read and send from, human approval to go external.

14

Mailoo - Email MCP Server

by Bitfloo

A

Email MCP server for AI agents: IMAP/SMTP, Gmail, Outlook, calendar, ManageSieve, AI triage, OAuth2.

15

Agent-Native Mail

by BuilderIO

A

Agent-Native Superhuman - email client with keyboard shortcuts and AI triage

16

Atomic Mail

by Atomic-Mail

A

Programmable email inbox for AI agents — JMAP, PoW auth, stdio MCP server.

17

Email

by codefuturist

B

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

18

Outlook MCP

by mpalermiti

A

Microsoft Outlook personal accounts: mail, rules, calendar, contacts, to-do, drafts (77 tools).

19

PipesHub

by pipeshub-ai

C

Permissioned search and cited answers over Slack, Drive, Gmail, Jira, and 50+ workplace sources.

20

smbCloud Mail & Auth

by smbcloudXYZ

A

Email infrastructure and authentication for developers: domains, inbox routes, auth apps, deploys.

21

MCPEmails

by mcpemails.com

A

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

22

Outlook

by rlrghb

A

Outlook & OneDrive MCP: personal & enterprise tools for mail, calendar, contacts, tasks, files

23

Sendraven

by sendraven.ai

B

Email infrastructure for AI agents: send, read replies as threads, campaigns, per-key limits.

24

Gmail

by domdomegg

B

Allow AI systems to read, send, archive, and manage emails via Gmail.