What is External Sender Callouts? External Callouts is what some organisations use to inform their staff that an email is coming from outside of their environment. IT Admins has created transport rule like this one http://www.thatlazyadmin.com/how-to-prepend-office-365-email-subject-when-email-is-received-from-external-sender/ The transport rule approach has some limitations which has been listed by Microsoft based on feedback from customers. You…
1 CommentLife as a LazyAdmin