lost all my email extentions

Did an update for my windows defender today and upon completion went to check emails and my three outlets are all gone ..
rebooted windows 10 laptop and upon completion email is still gone .. I don;t mean the emaisl themselves but the actual extension like gmail and pop3 accounts are no longer there within the tile ..

how to fix??

thanks

terry

they suddenly all came back, not sure how as I was poking around in different areas and was able to find activate my pop3 email that then in turn gave me back my outlook gmail and three pop3 accounts all under the tile in the start key area ..