Hello,

 

There is not a way to manually force the Auto-Clean rules to take place within SmarterMail.  As for how and when these run, it is a scheduled thread that runs every 10 minutes.  

 

One thing to note is that for an auto-clean task to be applied to a mailbox, a message does need to be received to that location.  For example if you have an auto-clean rule setup for the 'inbox' of an account, no auto-clean rules will be applied to existing messages until a email is received to that folder.

 

Thanks