....I don't know if this has been suggested.
A delete all option for messages?

yeah, this would be nice

AND/OR 

maybe another option to turn off notifications for when private shows get accepted

(not sure if that would help where you're going with it Neke)

It's BV, posting from a regular upgraded account so no admin powers confusion......
There is a delete all feature for messages in your inbox...
Clicky Screenie

Not sure how hard it would be to program in the option to turn on/off private show acceptance messages, but gonna poke Blitz about it and see!

Hey BV!

I use that one all the time, but it only seems to get the first 20 messages - not the 1000 in the subsequent pages of the inbox.

Ahhh! Okies! I was like....uhhhh.... xD
Not really sure about everything, aside from just going page to page sadly!

Haha yeah.

I use that but when you get like.... 50 pages...