ArchiveAssist might be the answer if Outlook hasn't been performing
as quickly as it used to, or if you've been experiencing unexplained crashes or freezes.
The .ost or .pst file is the single file which holds most of your Outlook data. As this file increases in size Outlook can slow down and display other aberrant behavior, placing your data at risk. And if you can't archive, your data file will continually grow, increasing the risk. If you've tried to archive your email messages only to find that Outlook simply wouldn't do so, ArchiveAssist might be the solution you need!
Let's say you want to archive all email messages which are more than one year old. You'd prepare to archive, specifying the cutoff date before which all messages should be archived. If the archive operation doesn't succeed, however, it's likely that Outlook has applied a Modified Date to the messages you want to archive which is after the cutoff date you specified. In other words, even though the messages are more than one year old, Outlook has marked them as more current. The fact that you want to archive the messages doesn't matter to Outlook - it's decided for you how those messages should be treated and it doesn't give you any control over your own data! That's not our opinion of how software ought to operate.