ProtonMail is the world’s largest encrypted email service with over 1 million users. The ProtonMail secure email app for iPhone and iPad
Encrypted locally. Encryption keys never leave your computer without your control. The server has no way to decrypt your data.
Encrypt.me will ensure that you are protected from browser leaking, Wi-Fi eavesdropping, broadband spying. Automatically secure on unknown network. 14 days free trial. Plans option: single, team, family, passes (week/month/year) and mini plan.