Posylai — AI Email Builder alternatives

1

Mailtea

by mailtea.app

A

Send email and newsletters with Mailtea over MCP, plus skills for email and website design.

2

MCP

by sendraven.ai

B

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

3

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.

4

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.

5

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

6

Outlook Email Html Lint

by jmshinhwa

A

Classic Outlook renders with the Word engine, the new Outlook with WebView2. Lint one email file aga

7

dead-letter

by BigCactusLabs

A

Convert .eml email exports to clean Markdown for RAG, LLM pipelines, and local knowledge bases

8

RuSender

by Rusender

A

Manage email campaigns, contacts and deliverability analytics in RuSender from an AI assistant.

9

Email Finder Server

by admosolutionsgo-star

B

Extract emails and phones from any website via Apify.

10

Sendinel

by sendinel.ai

B

AI-controlled email ops for campaigns, contacts, segments, analytics, and sending.

11

Sendhustle

by Achlesha

C

Send and manage email via the SendHustle API — emails, domains, contacts, audiences, campaigns.

12

DashaMail

by dashamail.ru

B

Email marketing for Russian businesses: lists, campaigns, reports, transactional email.

13

Sendly

by sendly.now

B

Send email, manage contacts, campaigns and workflows, and diagnose deliverability in Sendly.

14

Bottled

by bottled.email

B

Branded email on your own domain: send, reply, search, aliases, contacts and campaigns.

15

Uptimeify

by uptimeify.io

C

Free anonymous website, DNS, email and TLS checks, plus monitor read and opt-in write access.

16

Website Email Extractor, Phone & Contact Finder (CSV, Sheet)

by Nero-Engine

C

Published emails, phones and social profiles for every website in a list, CSV or Google Sheet.

17

Plumail

by plumail.fr

C

Manage a Plumail email workspace: subscribers, segments, campaigns, transactional sends and stats.

18

Gro

by usegro.co

C

Manage subscriptions, customers and email campaigns in your Gro account.

19

OpenOSINT

by OpenOSINT

C

AI-powered OSINT agent & MCP server. 16 tools: email, breach, IP, WHOIS, DNS, Shodan, GitHub & more.

20

Agent-Native Mail

by BuilderIO

A

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

21

Atomic Mail

by Atomic-Mail

A

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

22

Email Inbox API + Sending by Sendmux

by Sendmux

A

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

23

Local

by local-mcp.com

C

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

24

Outlook Assistant

by littlebearapps

A

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