Boxer Alternatives

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

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

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

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

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

freemium €5.0 / Monthly (user - 5 GB)

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.

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

paid Free Trial $3.0 / Monthly (per user)

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

K-9 is an opensource email client making it easy to chew through large volumes of email.

Team communication app now supporting FB, Twitter & SMS

freemium $14.0 / Monthly (^ 6 months history)

BlueMail is an email management app for Android, iOS, and Windows.

Spike solves businesses' communication chaos by bringing together email, team chat, collaborative docs, and meetings, into one feed.

freemium

Airmail is a lightweight and lightning fast mail client for Mac.