DP4 crazy mail sending issue

[jackmonter]

using Mail with gmail/Imap and while composing a message my blackberry starts beeping that message sent, so i continue to finish my message and mail has sent 3 mails like this ( here's an example)

mail 1)

Dear Ma, i was think


mail 2)

Dear Ma, I was thinking of you bla bla and

mail 3)

Dear Ma, I was thinking of you bla bla and i miss you

Love
Jack

its happened to all my messages ive sent

any idea's?