I have a Flow which should send an email with the contents of a Form to fellow staff members as soon as the Form is submitted by an anonymous user. I am using the Dynamic Content section to insert the email address entered into the Form by the anonymous user into the "Send an Email (V2)" condition's "From" and "Reply To" advanced options. When I tested the Flow while I was logged into Microsoft 365, the flow worked just fine and inserted the anonymous user's email address (a "gmail" address, not our company's address) into the "From" field and "Reply to" field, just like it was supposed to, and the email arrived in the staff member's inbox. However, when I did the same exact test while not logged into Microsoft (aka: as an anonymous user), the Flow failed, not recognizing the outside email address as valid, and didn't send the email.