Life & fun · alternatives · 2026

Darwin Mail is an email client designed for people who preferred Google Inbox's interface and features. Built by someone who missed the discontinued service, it recreates Inbox's approach to email management. The… Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. I miss Google Inbox and built a replacement launched in 2019; newer entries below may have overtaken it.

1. 1IB
   I Built Darwin Mail as a Google Inbox Replacement▲218

   2019 · darwinmail.app · its alternatives →

2. 2
   Darwin Mail▲259

   Enhance Gmail to get your Google Inbox features back.

   2019 · darwinmail.app · its alternatives →

3. 3
   Inbox by Google▲1,147

   Next generation inbox

   2014 · google.com · its alternatives →

4. 4
   New Gmail▲935

   The new version of Gmail web

   2018 · blog.google · its alternatives →

5. 5
   Inboxer▲212

   A clean, open-source desktop client for Google Inbox 💌

   2018 · denysdovhan.com · its alternatives →

6. 6
   Boxy▲572

   Inbox by Gmail, finally on your Mac

   2015 · boxyapp.co · its alternatives →

7. 7
   Upstream▲976

   The inbox designed for humans and agents

   Jun 2026 · upstream.do · its alternatives →

8. 8
   HTML Email▲783

   Responsive HTML email templates for startups & developers

   2016 · htmlemail.io · its alternatives →

9. 9
   Google Postmaster▲252

   High volume email tools from Google

   2015 · gmail.com · its alternatives →

10. 10
    Mail Studio – IDE for designing responsive emails▲395

    Application for designing beautiful responsive emails that work everywhere.

    2021 · mailstudio.app · its alternatives →

11. 11
    Inbox Zero▲821

    Clean Up Your Inbox In Minutes Newsletter management, AI automation, and email analytics. Inbox Zero is the open-source email app that puts you back in control of your inbox.

    2023 · getinboxzero.com · its alternatives →

12. 12
    Superinbox▲531

    Email vibing in your Gmail / Outlook

    Oct 2025 · superinbox.com · its alternatives →

13. 13
    Zero▲845

    Hi HN, I’m Nizar, and I’m building Zero (https://0.email) — an AI-powered email client that manages your inbox for you. Email hasn’t changed in decades, even though the way we work has. The average knowledge worker now spends close to 30% of their week on email, constantly reacting, replying, and sorting through noise. It’s become one of the biggest productivity sinks in modern work. At the same time, AI has transformed how we write, plan, and collaborate — yet our inboxes are still stuck in the past. I built Zero to fix that. Zero automatically prioritizes, organizes, and even…

    2025 · 0.email · its alternatives →

14. 14
    Shortwave▲299

    Email smarter & faster with a reinvented Gmail experience

    2022 · shortwave.com · its alternatives →

15. 15
    InboxSDK▲508

    First usable API to write Gmail Apps for 1B active users

    2015 · inboxsdk.com · its alternatives →

16. 16
    Mailwarm 2.0▲676

    The email warmup tool, upgraded for deliverability.

    Jun 2026 · mailwarm.com · its alternatives →

17. 17SM
    Super Mail Forward, an HTML email that evolves as you forward it▲454

    2016 · medium.com · its alternatives →

18. 18
    Boxy 2▲296

    The best Mac client for Inbox by Gmail

    2017 · boxyapp.co · its alternatives →

19. 19
    Hello Inbox▲283

    Hey HN, I built an email deliverability SaaS with a RAG system. It's trained on all my knowledge and hundreds of real deliverability use cases from 4+ years experience as an Email Deliverability Specialist on Upwork. It solves a frustration problem a lot of businesses are experiencing. I'm looking for feedback so let me know in the comments.

    Aug 2026 · helloinbox.email · its alternatives →

20. 20
    Canary Mail▲430

    Discover Canary Mail, the best email client with AI-powered features and integrated calendar. Access multiple accounts, prioritize important emails, and boost productivity effortlessly.

    2016 · canarymail.io · its alternatives →

21. 21
    GMass▲580

    Send email marketing campaigns INSIDE Gmail.

    2017 · gmass.co · its alternatives →

22. 22
    Startup Emails▲434

    Responsive HTML email templates for startups

    2017 · htmlemailtemplates.net · its alternatives →

23. 23
    Email Testing By Inbox Pirates▲355

    Preview, analyze & test emails with one click

    2022 · inboxpirates.com · its alternatives →

24. 24
    Signal – Edit emails in your Gmail inbox▲151

    2013 · trysignal.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 →