Secure Gmail has been discontinued. Similar apps include Proton Mail, which is open source with a free version. Other options are Tuta Mail, mailbox, Mailpile and Mailvelope. You can choose from more than 10 WebMail Providers like Secure Gmail for the web, Mac, Linux, Windows and Android.
Proton Mail provides secure email services with end-to-end encryption, ensuring data protection. Swiss-based and outside US jurisdiction, it offers a free version to champion privacy as a human right. Fully accessible on any device.
Switzerland
Offers comprehensive encryption for email, calendar, and contacts with zero personal info required. Built on open source, install via Play Store, F-Droid, or APK, with Tor and VPN support. Both free and paid plans; utilizes quantum-resistant encryption ensuring privacy-focused, anonymous usage.
Germany
EU
E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).
GermanyEU
Mailpile is a modern, fast web-mail client with user-friendly encryption and privacy features. The development of Mailpile is funded by a large community of backers and all code related to the project is and will be released under an OSI approved Free Software license.
Mailvelope is a browser extension that allows to exchange encrypted emails following the OpenPGP encryption standard.
GermanyEU
Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 10GB of storage capacity, 20 MB of maximum attachment size...
Norway
Enigmail is a security extension to Mozilla Thunderbird and SeaMonkey. It enables you to write and receive email messages signed and/or encrypted with the .
FlowCrypt (formerly CryptUp) is the easiest PGP encryption for Gmail. It behaves just like standard email, except it's encrypted.
United States
GPGMail is a PGP plugin for Apple Mail. It brings the functionality to sign, verify, encrypt and decrypt mails using the OpenPGP standard.
Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.
Switzerland
Runbox offers email hosting, domain hosting, and web hosting services, as well as custom-made email solutions
Norway
Lockbin is a web application for sending private email messages and files. People use it to send things like credit card numbers or confidential information.
