Tutanota for max security (no imap/pop3 support). Other services for using IMAP/POP3. But really, you shouldn't be using email anyway if your goal is max security and privacy, simplex.chat is better for that.
Tutanota for max security (no imap/pop3 support). Other services for using IMAP/POP3. But really, you shouldn't be using email anyway if your goal is max security and privacy, simplex.chat is better for that.