EmailPK alternatives

ProtonMail was founded in 2013 by scientists who met at CERN and were drawn together by a shared vision of a more secure and private Internet. Since then, ProtonMail has evolved into a global effort to protect civil liberties and build a more secure Internet, with team members also hailing from Caltech, Harvard, ETH Zurich and many other research institutions.

Spike's conversational email app makes working easier and more efficient. Saving you and your team time, sanity, and a lot of headaches.

Criptext is an encrypted email service that guarantees security, privacy and control over all your email communications. We don‘t have access to your emails nor do we store them in our servers. You‘re in control now.

MeSign is a free email client APP with automated S/MIME encryption. Every email can be encrypted, digitally signed and timestamp automatically. MeSign app has antivirus feature to handle all encrypted emails.