Proton
Proton provides encrypted services that keep your emails, files, and online activity private. Over 50 million people use Proton to stay secure online for free.
Secure Email
Infomaniak
Guaranteed 100% ad-free; create your @ik.me email address with 20 GB of storage for your emails and 3 GB of cloud storage with kDrive.
AnonAddy
Free, Open-source Anonymous Email Forwarding
Posteo
Email green, secure, simple and ad-free
Tutanota
The secure email service, built in Germany.