Forum Discussion
External Email Warning Banner for emails Outside of Office Tenancy
Hey guys, My company uses O365 and has a few companies/domains running under the same tenancy. I'd like to pitch that we add an external email warning banner to the top of emails that are from ...
You're probably better off setting the native External in Outlook feature: https://techcommunity.microsoft.com/t5/exchange-team-blog/native-external-sender-callouts-on-email-in-outlook/ba-p/2250098