Dev tools · alternatives · 2026

24 alternatives to Postman – A command-line utility for batch-sending email

CLI tool for batch-sending email via any SMTP server. - zachlatta/postman

Postman is a command-line utility that enables batch sending of emails through any SMTP server. Designed for developers, it provides a straightforward way to compose and dispatch multiple messages programmatically. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Postman – A command-line utility for batch-sending email launched in 2014; newer entries below may have overtaken it.

1. 1
   Postman for Mac (Beta)▲372

   Build, test, and document your APIs faster

   2016 · postman.com · its alternatives →

2. 2
   Mailman▲413

   A fix to "OMG, so many emails!"

   2020 · mailmanhq.com · its alternatives →

3. 3
   mailX by mailwarm▲596

   Email deliverability toolkit for humans and AI agents

   May 2026 · themailx.com · its alternatives →

4. 4
   Postman▲182

   Postman is a powerful HTTP client to test REST API

   2014 · postman.com · its alternatives →

5. 5MO
   Mailer – our in-house tool for sending email from the command line▲21

   2015 · dirwiz.com · its alternatives →

6. 6
   PigeonBot▲137

   Send emails via Slack with the /email command

   2017 · its alternatives →

7. 7
   Mailmeteor▲567

   Send hundreds of personalized emails with Gmail.

   2019 · mailmeteor.com · its alternatives →

8. 8
   Mailmeteor 2.0▲290

   Send auto follow-up emails with Gmail

   2022 · mailmeteor.com · its alternatives →

9. 9
   Maildown – Super Simple Email API▲98

   A super simple CLI for sending emails. Contribute to chris104957/maildown development by creating an account on GitHub.

   2019 · github.com · its alternatives →

10. 10
    Minute Mailer▲221

    Mailchimp + Buffer in one simple platform.

    2015 · minutemailer.com · its alternatives →

11. 11ET
    Easy-to-use curl command to send email notifications▲107

    2018 · curlmail.co · its alternatives →

12. 12
    MailAdept by mailwarm▲287

    AI Agents & Email deliverability experts on your team

    Jul 2026 · mailadept.com · its alternatives →

13. 13
    Command▲349

    Making the web better with Slack-like slash commands.

    2016 · slashcommand.club · its alternatives →

14. 14
    Volamail▲289

    Open source AI powered email for everyone

    2024 · volamail.com · its alternatives →

15. 15
    MailClark▲198

    The Slack bot for external communications

    2016 · its alternatives →

16. 16
    Mailercloud▲257

    Automate, optimize, convert, next level email automation

    2024 · mailercloud.com · its alternatives →

17. 17
    MailMaestro▲152

    Write AI-powered emails, summarize threads and attachments

    2023 · maestrolabs.com · its alternatives →

18. 18
    Zapmail▲172

    Slack as an email service

    2023 · zapmail.app · its alternatives →

19. 19
    Sendster AI▲96

    AI enabled newsletter software for Amazon SES, SMTPs

    2023 · getsendster.in · its alternatives →

20. 20
    MailerLogic▲96

    Email API with built-in deliverability intelligence

    Apr 2026 · mailerlogic.com · its alternatives →

21. 21II
    Insights into billions of daily smartphone notifications▲58

    Batch — AI Customer Engagement Platform (CEP) — Email, SMS, Push & Marketing Automation

    2014 · batch.com · its alternatives →

22. 22
    SendLater▲80

    Email scheduler for Mac Mail.

    2015 · mailbutler.io · its alternatives →

23. 23
    Mailr - AI Email Writer▲133

    Write and reply to emails using ChatGPT

    2023 · mailr-ai.com · its alternatives →

24. 24
    Library of API collections for Postman▲77

    Accelerate API development with Postman's all-in-one platform. Streamline collaboration and simplify the API lifecycle for faster, better results. Learn more.

    2017 · postmancollections.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →