PM storage?

Is there any possibility of having more space for PMs? I'd like to keep more than 100.

I've looked into archiving, and saving PMs, but there are different formats. If I could forward PMs (both sent and received) to my regular email that'd do well enough, but I don't think that's an option.

Dave,

You can switch on email notification of PM's, which include the contents of the PM itself. You can do this via the UserCP.

It's under 'Edit Options', half way down under 'Private Messaging', Receive Email Notification of New Private Messages