[Evolution] Outlook PST Equivalent

[Gavin Young <gavin young clendons co nz>]

Reading through previous mailing list postings it appears Evolution
doesn't support PSTs at all and the recommended method for viewing them
in Evolution is to use Mozilla Mail to import the PST and then export as
mbox but what about archiving mail?

Previously I used to archive items older than 3 months into a PST that I
could backup. What is the equivalent in evolution?

Interested to hear what people recommend.

Regards,
Gavin