Agent Email List — Free SMTP Relay for AI Agents alternatives

1

Mailoo - Email MCP Server

by Bitfloo

A

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

2

Email

by codefuturist

B

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

3

Imap

by nikolausm

A

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

4

Impreza Host

by imprezahost

B

No-KYC offshore hosting an AI agent runs end-to-end: no-email signup, crypto, VPS, deploy, Tor.

5

Fluxmail

by fluxmailai

B

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

6

Sendraven

by sendraven.ai

B

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

7

MisarMail MCP Server

by Misar-AI

A

Send transactional email, run campaigns, manage contacts and automations, audit deliverability.

8

Sendgrid

by codespar

B

MCP server for SendGrid — global transactional + marketing email (Twilio-owned)

9

ContrastAPI

by contrastcyber.com

B

55 tools, 7 Resources, Sigma rules, email SPF/DMARC, MITRE, CVE/KEV, risk_score. No key.

10

SendGrid MCP Server

by deyikong

B

MCP server for SendGrid's v3 API: email marketing, transactional mail, templates, and analytics.

11

Proton Mail (unofficial)

by sethbang

B

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

12

Forward Email

by forwardemail.net

A

Privacy-focused email: domains, DNS verification, aliases, SMTP sending, mailboxes and calendars.

13

Nitrosend

by nitrosend.com

B

AI-native email marketing. Campaigns, automations, transactional, contacts, and analytics.

14

AgentiSend

by fortuneflick

A

Email API for apps and AI agents: budgets per key, a kill switch, refusals that name the fix.

15

SendGrid Transactional

by Neschadin

B

SendGrid transactional email: preflight send, templates, and delivery diagnostics.

16

MX Probe

by mxprobe.dev

B

Email verification for AI agents: send, hold or kill with the reason. Signup and credits by API.

17

owlpost

by smankoo

A

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

18

Postmark

by mcparmory.com

B

Send, track, and manage transactional and bulk email delivery

19

Palmyr

by palmyr.ai

B

Agent infra: email, phone, social, domains, VPS, wallets. Paid per-action via x402, no API key.

20

Zerosmtp

by msgwing

C

A free SMTP relay that still takes a username and password, for devices that cannot do OAuth 2.0.

21

gitpro

by Yantrakar

A

Read-only checks of which git name, email and SSH key a repository uses, and why.

22

Titan Email

by qmmughal

B

MCP server for Titan Email (IMAP/SMTP), tested and confirmed with GoDaddy mailboxes.

23

Ecc

by karljsamuel

B

Unified MCP server for Email, Calendar & Contacts (Google, M365, Zoho, IMAP/SMTP, DAV).

24

emailmd

by emailmd.dev

A

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.