Tutanota
Open Source
Tutanota is an open-source end-to-end encrypted email software and freemium hosted secure email service.
Kolab Now
Commercial
Kolab Now is a web-based email and groupware service, based completely on free and open-source software.
Hushmail
Commercial
Hushmail is an encrypted proprietary web-based email service offering PGP-encrypted e-mail and vanity domain service.
Mailfence
Freemium
Mailfence is a web-based email service that offers OpenPGP based end-to-end encryption and digital signatures.
Soverin
Commercial
Soverin is a secure mail hosting platform.
Zoho Mail
Freemium
Zoho Mail is a email service with ample storage, POP and IMAP access, some integration with instant messaging and online office suites.
FastMail
Commercial
FastMail is an email service offering paid email accounts for individuals and organizations.
Posteo
Commercial
Posteo is an email service provider offering paid email accounts for individuals and businesses.
WorkSpace
Commercial
WorkSpace collaborative suite for SMEs.
Compare ProtonMail with alternatives
Compare Tutanota and ProtonMail and decide which is most suitable for you.
Compare Zoho Mail and ProtonMail and decide which is most suitable for you.
Compare Kolab Now and ProtonMail and decide which is most suitable for you.
Compare FastMail and ProtonMail and decide which is most suitable for you.
Compare Hushmail and ProtonMail and decide which is most suitable for you.
Compare Mailfence and ProtonMail and decide which is most suitable for you.
Compare WorkSpace and ProtonMail and decide which is most suitable for you.