 
Delete e-mail messages
To delete an e-mail message from the device and retain it in the remote mailbox, 
select 
Options
>
Delete
>
Phone only
. To delete an e-mail from both the device
and the remote mailbox, select
Options
>
Delete
>
Phone and server
.
To cancel deletion of an e-mail from both the device and server, scroll to an e-mail 
that has been marked to be deleted during the next connection, and select 
Options
>
Restore
.