I have two items in outbox express and they have too large attachments, I want know how to delete out of outbox and send attachments in a smaller amount at a time
Go to File | Work Offline and then go to the outbox and make sure it is set
to View | Current View | Show all messages and then delete the message.
Then go to Tools | Accounts | Mail | Properties | Advanced and set the
option to break apart messages that are a certain size and then set the
size. That will send large messages in pieces. You might also try reducing
the attachment size prior to attaching it.