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. MeSign app launched in 2020; newer entries below may have overtaken it.

1. 1
   M for iOS▲126

   Email app with automatic encryption

   2015 · its alternatives →

2. 2
   MySignature▲165

   Free email signature generator

   2017 · its alternatives →

3. 3
   ProtonMail▲199

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

   2016 · its alternatives →

4. 4
   Autosign▲64

   Sign PDF documents online automatically

   2022 · its alternatives →

5. 5
   Sealit▲511

   Simple data security to get compliant & stay productive

   2023 · its alternatives →

6. 6SM
   SocialSign.me - About.Me for Your Email Signature▲42

   2011 · socialsignme.appspot.com · its alternatives →

7. 7MA
   Mimestream, a native macOS email client for Gmail▲403

   2020 · mimestream.com · its alternatives →

8. 8EE
   Easy Email Encryption inside Gmail (Alpha, Open-Source)▲170

   2013 · streak.com · its alternatives →

9. 9
   Sendforsign▲437

   Making digital contracts frictionless

   2023 · its alternatives →

10. 10
    Newoldstamp▲283

    Fully automated email signature management software

    2022 · its alternatives →

11. 11EI
    EmailPK – Instant encrypted email▲53

    2014 · diafygi.github.io · its alternatives →

12. 12
    Quartz▲270

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

    Jun 2026 · quartzmail.ai · its alternatives →

13. 13
    DottedSign▲110

    The e-signature solution for your business

    2019 · its alternatives →

14. 14
    Mimestream▲224

    A native macOS email client for Gmail

    2020 · its alternatives →

15. 15
    Mimestream 1.0▲175

    A native macOS email client for Gmail

    2023 · its alternatives →

16. 16
    justsignup.me▲10

    Effortless Email Signup & Welcome Email Automation

    2024 · its alternatives →

17. 17
    Meco▲166

    A newsletter reader app that connects with Gmail

    2021 · its alternatives →

18. 18
    HelloSign▲138

    Easiest way to sign documents from within Gmail /Google Docs

    2014 · its alternatives →

19. 19
    Unibox for iOS▲101

    Your emails organized by person

    2015 · its alternatives →

20. 20
    Byte Orbit Privacy Cannon▲6

    This is a file, email, IM encryption app.

    2020 · its alternatives →

21. 21
    SwiftSign▲7

    Professional email signatures for modern teams

    Sep 2025 · its alternatives →

22. 22ET
    End-to-end encrypted email, based in Switzerland▲45

    2014 · protonmail.ch · its alternatives →

23. 23
    MySign email signature ▲1

    One Signature that makes you better

    2022 · its alternatives →

24. 24
    SecureMyEmail▲2

    Easy Encryption for ANY Email Address. Work or Personal.

    2019 · 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 →