The best Calendar alternative to Gmail is Proton Mail, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Gmail and 16 are Calendar Apps so hopefully you can find a suitable replacement. Other interesting Calendar App alternatives to Gmail are Tuta Mail, mailbox, Posteo and Fastmail.
Mailture, a secure, business-oriented email service, is made to cater to all your emailing needs. With top-notch collaboration and communication features, Mailture offers much more than your usual inbox.
United Kingdom
Custom-domain email with unlimited mailboxes, shared calendars, video meetings, file storage and an AI assistant connector, without per-user fees.
Türkiye
