dead-letter alternatives

1

Posylai — AI Email Builder

by posylai.ru

A

Build responsive HTML email campaigns from any brand website: design, QA, export.

2

Converter

by filetypeconverters.com

C

Convert files between 44 formats: documents, spreadsheets, images, ebooks, email and subtitles.

3

Agent-Native Mail

by BuilderIO

A

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

4

Atomic Mail

by Atomic-Mail

A

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

5

Local

by local-mcp.com

C

Let ChatGPT, Claude & Cursor use your Mac: email, calendar, iMessage, Teams, files. Local, free.

6

Impreza Host

by imprezahost

B

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

7

Email Inbox API + Sending by Sendmux

by Sendmux

A

AI email inbox and sending tools with attachments, search, live events, and webhooks.

8

MCP

by dechonet.com

A

20 domain recon tools for AI agents: DNS, SSL, headers, email, subdomains, lookalikes, changes.

9

Fluxmail

by churichard

C

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

10

MCP

by sendraven.ai

B

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

11

MX Probe

by mxprobe.dev

B

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

12

Gmail

by mcp-z

C

Gmail integration with OAuth authentication, message search, batch operations, and Sheets export

13

Ray notifications

by gege-mn

A

Send email, push, Slack, Discord, Telegram and webhook notifications and manage templates with Ray.

14

EmptyInbox

by cnohall

B

Zero-config disposable email inboxes for AI agents: create, read mail, await verify codes.

15

Email

by wraps.dev

A

Query SES send history, delivery events, domains and suppressions, and send from your AWS account.

16

BlackVeil DNS & Email Security Scanner

by blackveilsecurity.com

B

DNS and email security scanner with 80 MCP tools for SPF, DMARC, DNSSEC, SSL, and brand audits.

17

ParseAPI

by parseapi.com

A

Official ParseAPI MCP. Place, IP, email, phone, weather, currency lookups.

18

Monacloud

by monacloud.vn

B

Buy .vn/intl domains in VND, deploy apps, Postgres, email, VietQR pay — Vietnam MCP for AI agents

19

Abnormal Security MCP

by Servosity

B

Abnormal Security email threats, cases, and reporting in your terminal and your AI agents.

20

MCP

by openagentemail

B

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

21

Ecc

by karljsamuel

B

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

22

Lettio MCP

by lettio.eu

A

Private, EU-hosted email for AI agents over JMAP: read, search, reply, organize, send.

23

Mailwarden

by csitte

A

Gmail MCP server for email triage: search, labels, archive, trash, unsubscribe, snooze.

24

Email Footer Law Lint

by jmshinhwa

A

Fourteen checks on an HTML email footer: CAN-SPAM postal address and 10-business-day opt-out, CASL's