I just signed up for your beta. I receive about 500 emails a day in Outlook for Mac, and every few months I have to rebuild my entire inbox due to search/filt

I just signed up for your beta. I receive about 500 emails a day in Outlook for Mac, and every few months I have to rebuild my entire inbox due to search/filter anomalies. Need a way to purge past months/years while maintaining accessibility. Unless I'm missing something, the only way to do this is to move messages to a local mailbox, but it's still locked to Outlook.