Alternatives

Products that do what Mektup does

Send & receive email on your domain, for apps & agents

1. 1
   AutoSend MCP▲171

   The email platform your AI agent can operate.

   Mar 2026

2. 2
   Atomic Mail Agentic▲268

   Let your agents read, send, and react to email autonomously

   Jun 2026 · atomicmail.ai

3. 3
   Sidemail MCP▲150

   Let AI agents write & manage your SaaS emails

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4. 4
   AgentMail▲275

   Email Inboxes for AI Agents

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5. 5
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   Email for AI agents. They sign up, send and reply.

   Jul 2026 · nitrosend.com

6. 6
   Cloudflare Email Service▲168

   Turn any email inbox into a native interface for AI agents

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7. 7
   Unosend▲205

   Send transactional + marketing email w/ 99.9% deliverability

   Dec 2025

8. 8
   Mailercloud Email API Platform▲165

   1,000+ Emails per Second with 99%+ Deliverability

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9. 9AE
   Agent.email – sign up via curl, claim with a human OTP▲99

   Hi HN! We're Haakam, Michael, and Adi from AgentMail- a ycs25 company. We give AI agents their own email inboxes. Recently, we ran an experiment called Agent.Email. It's a signup flow designed specifically for AI agents instead of humans. The inspiration came from a few comments we received when we did our seed launch a few months back. They all came from the very apt observation that agents not being able to sign up to a product made for agents without human credentials was ironic and unideal. This is basically the thesis we built AgentMail on: The internet was made for humans exclusively,…

   May 2026

10. 10
    Langchain AI Email Assistant▲164

    The prototype of ambient agents

    2025

11. 11
    Unitpost▲26

    Let AI-Agents generate and send production-ready Emails.

    4d ago · unitpost.com

12. 12
    MailerLite email marketing MCP server▲144

    Turn your AI tool into a personal email marketing assistant

    Oct 2025

13. 13
    inbound ▲227

    An email platform for builders

    2025

14. 14
    Outerspan▲205

    Deploy agents that have their own email inbox

    2025

15. 15
    ImprovMX▲292

    Free email forwarding

    2019

16. 16
    MailerLogic▲96

    Email API with built-in deliverability intelligence

    Apr 2026

17. 17
    Astro for Android▲174

    Modern email app for Mac, iOS, and Android, powered by AI

    2017

18. 18
    Deliveryman.ai▲186

    Cold email infrastructure on autopilot without Gsuite

    Jun 2026 · deliveryman.ai

19. 19
    MeowMail▲103

    Send Emails like Social Media, with 98% Inbox Deliverability

    2024

20. 20
    Thanks.io▲146

    Direct mail automation platform

    2023

21. 21KF
    KeyID – Free email and phone infrastructure for AI agents (MCP)▲11

    Mar 2026 · keyid.ai

22. 22
    AI Email Writer by Mailmeteor▲119

    The AI email writer that Google wishes they built

    2024

23. 23
    SuperSend 3.0▲94

    Sequences, infrastructure, deliverability. One product.

    Mar 2026

24. 24
    Swift Missive▲63

    Send entire mass email campaigns from an AI chatbox

    Dec 2025

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