send it later fails to save the message

[user]

Hi,

When I hit CTRL+SHIFT+ENTER(send later) the message is saved in the 
Unsent Messages folder of another mail account (let's say mail account 
2). After deleting that mail account (2), I cannot use the function 
"send later" because the e-mail cannot be saved in the Unsent Messages 
folder anymore.
Has anyone encountered this problem?

Regards,
Octav'