[black7]

I've been using SEVEN for a long time. Works great, and though it does affect the battery life a bit, it's not too bad in my experience. My phone through the whole day and I have 3 accounts syncing through SEVEN (1 gmail, and 2 branded email though gmail). I sync contacts with gmail, which also syncs with my Exchange server so I have multiple locations which have my contacts (make me feel safer knowing I have a 'backup').

Sprint's MAIL is rebranded SEVEN Persnal Edition.