The latest version works with the latest WHMCS but there is a few bugs. I had talks last month with SmarterMail to find fixes to all the bugs.
Allowing users to choose the mailbox size can be done using configurable options but does need the code to be edited to get the details.
Mark Milton
Pro Tech North
Web: www.protech-north.co.uk
Email: mark.milton@protech-north.co.uk
Tel: +44 (0)1261 838282
Web Design & Web Hosting