Growth · alternatives · 2026

24 alternatives to MeSign app

Automated end-to-end encrypted email client

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. MeSign app launched in 2020; newer entries below may have overtaken it.

1. 1
   M for iOS▲126

   Email app with automatic encryption

   2015 · mynigma.org · its alternatives →

2. 2SM
   SocialSign.me - About.Me for Your Email Signature▲42

   2011 · socialsignme.appspot.com · its alternatives →

3. 3
   MySignature▲165

   Free email signature generator

   2017 · mysignature.io · its alternatives →

4. 4
   ProtonMail▲199

   End-to-end encrypted email - now on iOS & Android

   2016 · proton.me · its alternatives →

5. 5
   Autosign▲64

   Sign PDF documents online automatically

   2022 · its alternatives →

6. 6
   Sealit▲509

   Simple data security to get compliant & stay productive

   2023 · its alternatives →

7. 7EE
   Easy Email Encryption inside Gmail (Alpha, Open-Source)▲170

   Manage sales and customer relationships directly inside Gmail. Streak is the CRM your team will actually use—integrated, smart, and loved by 750,000+ users.

   2013 · streak.com · its alternatives →

8. 8
   Mail by Apple▲302

   Apple's email client, unbundled 📧

   2016 · apps.apple.com · its alternatives →

9. 9
   Mimestream, a native macOS email client for Gmail▲403

   A native macOS email client for Gmail

   2020 · mimestream.com · its alternatives →

10. 10
    EmailPK ▲69

    Instant encrypted email

    2014 · diafygi.github.io · its alternatives →

11. 11
    Newoldstamp▲283

    Fully automated email signature management software

    2022 · newoldstamp.com · its alternatives →

12. 12
    Secure Swiss Data Encrypted Mobile App▲69

    Fully encrypted email app, hosted exclusively in Switzerland

    2017 · swissfinancestartups.com · its alternatives →

13. 13
    Quartz▲270

    AI email client built for focus. Runs locally on your Mac

    Jun 2026 · quartzmail.ai · its alternatives →

14. 14
    DottedSign▲110

    The e-signature solution for your business

    2019 · dottedsign.com · its alternatives →

15. 15
    Mimestream▲224

    A native macOS email client for Gmail

    2020 · mimestream.com · its alternatives →

16. 16
    Mimestream 1.0▲175

    A native macOS email client for Gmail

    2023 · mimestream.com · its alternatives →

17. 17
    I wrote an email app that accepts only one sender per inboxfree tier, from $2.5/mo▲114

    Give every company you deal with its own email address, all in one account. When one leaks or starts sending spam, delete it, not your life.

    13d ago · clova.email · its alternatives →

18. 18
    justsignup.me▲10

    Effortless Email Signup & Welcome Email Automation

    2024 · its alternatives →

19. 19EI
    EmailPK – Instant encrypted email▲53

    2014 · diafygi.github.io · its alternatives →

20. 20
    Meco▲166

    A newsletter reader app that connects with Gmail

    2021 · apps.apple.com · its alternatives →

21. 21
    HelloSign▲138

    Easiest way to sign documents from within Gmail /Google Docs

    2014 · sign.dropbox.com · its alternatives →

22. 22
    Unibox for iOS▲101

    Your emails organized by person

    2015 · uniboxapp.com · its alternatives →

23. 23
    Byte Orbit Privacy Cannon▲6

    This is a file, email, IM encryption app.

    2020 · apps.microsoft.com · its alternatives →

24. 24
    1SecMail▲112

    Free disposable email that actually arrives in real time

    2025 · tmaily.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 →