

Under Except if, choose whether you want exceptions for sender, recipient, attachment and more and follow those steps. This means that if the disclaimer can't be added because of encryption or another mail setting, it will be wrapped in a message envelope.

Select Select one, choose Wrap as a fallback option, and then select Save. Select Enter text, type your disclaimer, and then select Save.

Under Do the following, leave Append the disclaimer selected. Select the + (Add) icon and choose Apply disclaimers. Select Admin centers, and then choose Exchange. Select the app launcher, and then select Admin.
