Inbox Check — Email Deliverability Test alternatives

1

Atomic Mail

by Atomic-Mail

A

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

2

Fluxmail

by churichard

B

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

3

IntoDNS.ai DNS & Email Security Scanner

by intodns.ai

B

DNS and email security: check SPF, DKIM, DMARC, DNSSEC, DANE and build the records. 45 tools.

4

Agent Email

by UseJunior

A

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

5

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.

6

Palisade

by palisade.email

A

Monitor and manage email authentication (SPF, DKIM, DMARC, MTA-STS, BIMI) for your domains.

7

Email Finder

by superagnt.com

A

Email finder + verifier for AI agents: find work emails by name and company, check deliverability.

Email-domain intelligence: MX capability, provider, disposable status, SPF, DMARC, and MTA-STS.

9

drwho.me network and developer tools

by drwho.me

B

29 free tools: DNS, email auth (SPF, DKIM, DMARC), TLS, headers, WHOIS, dev utils.

10

Email Spam Tester

by serg-tanichev

A

Test an email before it goes out: a disposable address, 41 checks with RFC citations, a fix plan.

11

Domain Security

by OrtaMarco

A

Audit a domain's email and web security: SPF, DKIM, DMARC, MTA-STS, DNSSEC, TLS, WHOIS. No API keys.

12

SignatureForever

by signatureforever.com

C

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

13

Agent-Native Mail

by BuilderIO

A

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

14

Email Inbox API + Sending by Sendmux

by Sendmux

A

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

15

Outlook Assistant

by littlebearapps

A

Microsoft Outlook MCP server — 22 tools for email, calendar, contacts, and mailbox management.

16

MCP Emails

by mcpemails.com

A

Never-stored live email: read, send, organize, schedule and auto-triage Gmail or any IMAP mailbox.

17

Outlook

by rlrghb

A

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

18

EmptyInbox

by cnohall

B

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

19

Outlook MCP

by mpalermiti

A

Microsoft Outlook personal accounts: mail, calendar, contacts, to-do, drafts (62 tools).

20

Apixies Developer API Suite

by apixies.io

B

50 developer utility APIs as tools: SSL, DNS, WHOIS, email checks, HTML to PDF, sitemaps and more.

21

MCP

by openagentemail

B

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

22

nintact

by nintact.com

B

Contact forms that actually arrive. No SPF/DKIM, no SMTP. AI sorts them and drafts the reply.

23

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

24

Mailwarden

by csitte

A

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