have an HTC Desire S on which I access five different e-mail accounts with different hosts, BT, GMail, and Hotmail. They are all exhibiting the same behaviour. When I send an e-mail, it gives me the message 'Unable to send email' and the mail stays in the Out Box. However, the mail has been sent and goes on being sent again every time that it tries to re-send, as it thinks it has failed. This has only started in the past few days. Any help much appreciated.