Growth · alternatives · 2026

24 alternatives to Secure Swiss Data Encrypted Mobile App

Fully encrypted email app, hosted exclusively in Switzerland

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Secure Swiss Data Encrypted Mobile App launched in 2017; newer entries below may have overtaken it.

1. 1
   Secure Swiss Data Encrypted Email Mobile Apps▲2

   Fully encrypted email apps, hosted in Switzerland

   2018 · swissfinancestartups.com · its alternatives →

2. 2
   ProtonMail▲199

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

   2016 · proton.me · its alternatives →

3. 3
   ProtonMail▲82

   End-to-end encrypted email, based in Switzerland.

   2014 · proton.me · its alternatives →

4. 4
   .app▲628

   A new secure domain for apps from Google.

   2018 · registry.google · its alternatives →

5. 5
   Secure Calendar▲75

   Privacy respecting calendar

   2019 · securecalendar.online · its alternatives →

6. 6
   SecureDB▲83

   Encryption as a service for mobile, web and IoT applications

   2015 · securedb.co · its alternatives →

7. 7
   End-to-end encrypted email, based in Switzerland▲45

   Proton Mail is the world’s largest secure email service with over 100 million users. Available on Web, iOS, Android, and desktop. Protected by Swiss privacy law.

   2014 · protonmail.ch · its alternatives →

8. 8
   M for iOS▲126

   Email app with automatic encryption

   2015 · mynigma.org · its alternatives →

9. 9
   MeSign app▲63

   Automated end-to-end encrypted email client

   2020 · its alternatives →

10. 10EE
    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 →

11. 11
    HTTPS Everywhere▲294

    Chrome extension that encrypts and secures your browser

    2017 · chromewebstore.google.com · its alternatives →

12. 12
    Hop Encrypted Email▲132

    Completely private chat email, w/ encrypted email messaging

    2017 · spikenow.com · its alternatives →

13. 13
    Dash▲122

    Private, encrypted OSS notes app

    2025 · dashnote.io · its alternatives →

14. 14
    Secure Send▲82

    Securely send passwords or sensitive data

    2015 · securesend.io · its alternatives →

15. 15
    Keybase for Mobile▲159

    End-to-end encryption messaging platform

    2017 · keybase.io · its alternatives →

16. 16
    ShadowCrypt▲65

    Encrypts e-mails, Facebook status updates, tweets (Chrome)

    2014 · shadowcrypt-release.weebly.com · its alternatives →

17. 17
    Chadder▲89

    Encrypted messaging app

    2015 · emojiguide.com · its alternatives →

18. 18
    Canary Mail▲122

    Privacy-friendly email app for macOS, iOS & Android

    2021 · play.google.com · its alternatives →

19. 19CM
    Cipher – Mobile Ethereum Web3 DApp Browser▲76

    2018 · cipherbrowser.com · its alternatives →

20. 20
    Skiff Mail▲165

    Private, end-to-end encrypted, open-source mail

    2022 · skiff.com · its alternatives →

21. 21
    Cryptee▲155

    An encrypted home for your private photos, docs & notes.

    2018 · crypt.ee · its alternatives →

22. 22
    secure-ls▲81

    Secure localStorage data with encryption and compression

    2016 · github.com · its alternatives →

23. 23
    ASTIS Mail▲12

    Encrypt Gmail/M365 mail, calendar & attachments

    Jun 2026 · mail.astis.io · its alternatives →

24. 24
    Dark Mail▲62

    Truly Encrypted Email That Even Encrypts the Metadata

    2014 · 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 →