Based on the popular K-9 Mail, Floating Mail is a free email client with chat-heads style notifications.
Get notified on new emails with beautiful chat head style floating notifications.
Floating mail allows you to read incoming mail while using other apps.
Just touch the floating bubble to open your incoming mail. You can freely move the bubble and toss it around the screen.
The floating bubble will display your contact's picture (if one is available).
Update: I'm getting a lot of good reactions, especially about the floating UI, and I must say that the credit for it goes to Tooleap. I created several floating apps with their SDK and I know they accept developers to their private beta on their site: www.tooleap.com
Here is their XDA thread http://forum.xda-developers.com/show....php?t=2727437
Download Floating Mail on Google Play