Boomerang for Android lets you schedule Gmails to be sent and received at specific dates and times
There are numerous features on the app including the ability to use intuitive gestures for navigation and to snooze email messages by removing it from your inbox only to reappear at a scheduled date and time. And by swiping a message's title directly from the inbox, it can be starred, deleted, labeled and more without ever opening up the letter. That is similar to the swipe function on the latest update to Gmail, but with many more capabilities. Boomerang is a free download for those with Android 2.2 or higher and allows you to customize Gmail with different colors and themes.
The app just was launched on Wednesday, so if you hurry and install it now, you could be the first on your block to have Boomerang make the jump from the desktop to your Android phone.
source: Boomerang (1), (2) via CLOVE