But why is his outlook slowing down after the 3 years of keeping email
in IMAP?
When it is caused by keeping all emails in that container - or a few
containers as Joe Mills wrote - what is the solution?
Joe, dīd you use the archive function of Outlook? In that case, you
will have GB's of mail in pst files. When you didn't use that archive
function, all e-mail is stored on the server (Exchange??). I thought a
mailserver like Exchange could handle many GB's of mailstorage and
doesn't have a limit of 2 GB per account.
In addition of my mentioned solution, if you want to archive by saving
the email as msg file, I can recommend MailToFile
(
www.MailToFile.com/en). With MailToFile all e-mails or all old e-mails
can be stored in folders (on the filesystem) in stead of in Exchange or
pst-files. And they still are very well accessible and searchable. Even
on a read only drive (like DVD of read only network drive).
By the way, Joe are you still there?