K9 Alternatives

Newton is a fully featured mail client available for Android, iOS, macOS and Windows.

myMail is the smart email app for managing all your accounts on iOS and Android.

Android Mail Client.

Gmail is available across all your devices Android, iOS, and desktop devices. Sort, collaborate or call a friend without leaving your inbox.

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

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Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues

Open source, privacy friendly email app

Secure email with absolutely no compromises. Get your free encrypted email account today.

freemium €5.0 / Monthly (user - 5 GB)

Email, calendars, and contacts to highest standards of security, privacy and reliability.

paid Free Trial $3.0 / Monthly (per user)

A visual to-do list, cut nine ways.

Get your encrypted mailbox for free.