Today, we lost connection at our company to Outlook. I wanted to know if Microsoft Teams Chat should still work even when the Office 365 email is down. We are newly migrated, so sorry to ask a dumb question.
@SheilamacI assume your Question is will Teams Work when Exchange is down. The Answer is Yes.. Teams Uses Exchnage online for Storing Chat Message or Sending email notification. There can be some features missing or not working as expected however the Basic Teams Functionalty should be working when Exchange Online is down. Note that Chat messages are temporarily store in Azure before pushing them to the users mailbox