Flawless Performance for me on my Verizon 8830, I have had no issues with Gmail. I also have the Gmail applet installed so that my wife can easily check her mail while we are out. Gmail is flawless .. I have my gmail setup for IMAP, I am not sure if that makes a difference, but it does auto sync. If I check the mail on my blackberry, it is checked when it downloads on my mac. If I delete it, it automatically deletes it on the server side.