For those still reading email on Android's stock app, help is on the way. This fine-tuned mailer lets you view messages in a unified inbox or by each account. Set it to provide silent notifications at night, blink your phone's LED a certain color, cache different numbers of messages for different folders, and more.
WIRED Store messages on your SD card. Truly free, with no ads.
TIRED Searches only messages that have been downloaded to the server. Currently, no conversation view for email threads.