Boomerang

Boomerang (Email App for Gmail and Exchange) is an email client that allows you to manage your Gmail, Google Apps, and Microsoft Exchange accounts with many additional and interesting features.

With Boomerang, you can monitor responses, schedule emails for a specific date and time, activate a snooze option for emails, and use gestural shortcuts, among many other features.

Apart from all this, Boomerang (Email App for Gmail and Exchange) offers exactly what you'd expect from an email client for Android. With it, you can easily manage your accounts by archiving, deleting, and reading emails or marking them as read, etc.

Boomerang is a powerful email client, and its most interesting feature is the ability to program and schedule your emails. Thanks to this feature, you can send emails at any time without even having to be awake.