With this exciting update you can use your encrypted Tuta Contacts as your main phone book. Tuta makes sure that all your contacts are stored securely, and you can easily sync them to all your mobile devices
https://tuta.com/blog/full-device-contact-integration-is-here
more here: TutaCrypt
Tuta mail Vrs Protnmail
https://cybernews.com/secure-email-providers/tutanota-vs-protonmail/
these 2 services offer the same kinda services - they are pretty similar, except ProtonMail supports PGP which works with people who don't use ProtonMail, whereas Tutanota uses its own encryption which only works with Tutanota users.
more here on Tuta encrytion
@ecksmc are there any comparison articles you recommend? I used Fastmail for a very long time until they moved to a much more expensive model.