ProtonMail - Secure email with absolutely no compromises. Get your free encrypted email account today.
Posteo - Web- and IMAP-based email service. 2GB cost 1€/month.
Mailvelope - Mailvelope open source project. OpenPGP in your browser.
Inbox.lv - Inbox.lv Mail
APG - Android Privacy Guard (APG) is a free and open source application for ...
CounterMail - Countermail is a web-based email service. It is hosted in Sweden. Its focus is on privacy.