GroupWise built in archiving is WAY too slow on a NSS volume (reasonably slow on the local hard drive... but the n its not backed up)

Last time I looked (last year) email GW archiving most companies were not interested unless you had hundreds of users!

If you have 25 ....

There are companies which offer IMAP based archiving who will talk to you if you have 5 or 25 or 5000 users !

Anyone know of any GW compatible product that is available for 5,10 or 25 users ?
(NOT hosted)