Delete from the phone and server
To delete an e-mail from the phone and the remote mailbox, select
Options
>
Delete
>
Phone and server
.
If you are offline, the e-mail is first deleted from your phone. During the
next connection to the remote mailbox, it is automatically deleted from
the remote mailbox. If you are using the POP3 protocol, messages
marked to be deleted are removed only after you have closed the
connection to the remote mailbox.