[Rich]

Thanks for the response Cyricx. I don't completely understand the vbulletin mail system, so I am just trying to think of it logically. I know that when I was running 3.5 and had the auto prune usergroup modification installed, I experienced a mail backup.

It emailed users in the Unconfirmed Usergroup every 3, 5 and 7 days. Just that added load, in addition to the amount of users who subscribe to specific threads on my site, confirmation emails, comment emails, etc., I ended up having a day and half lag on sent emails.

Once I had uninstalled that modification, within a few days my mail que was back to normal.

I am looking at this as possibly doing the same thing. I may be wrong, but i wont know until I try it.

I like the concept of my staff being able to use this, so I may have to give it a go and see how it does.