Mailfence is a Belgian, privacy-focused alternative to Gmail and Outlook, combining mail, calendar, contacts and file storage in one suite. It stands out for built-in OpenPGP encryption support, which most mainstream competitors leave out, giving you real end-to-end options for sensitive messages.
It also carries a public-interest mission: a share of its revenue funds digital-rights organisations. A free entry tier lets you try it before moving up to the Entry, Pro or Ultra paid plans.