yeah right, or how can i see the all the emails, because some times the users send a mail with an atachmetn for 5 mb for a lot of users
You will need to teach those users not to do that.
and the mail queue is really really slow, how can i see wich mail is
sometimes there are very large emails them and how I can see them for remove them to unlock the mail queue
The mail queue is not locked. If you wait patiently, all the mail will be sent.