I'm having an issue with HTC Mail. With one particular message type only. When I try to read it, I see the phone working to download it, then get the message "This mail is still on the server". The only thing different versus other mail (that I can think of) is that it comes from .mil accounts with a digital signature hash. I can read them fine in Thunderbird, and two colleagues who get emails from the same accounts can read them fine on their phones. One has a Droid X, the other has an HTC Windows phone. Both of them are on Verizon, so maybe this could be a Sprint issue versus HTC? Edit: Actually just for kicks I just sent myself an email with my digital signature and HTC Mail won't download that either, so it's definitely the digital signatures doing it. Anyway, if anyone else has run into this or has suggestions, it would be most appreciated.