This article shows how to setup out of office automagical reply on Outlook app .
1. With Outlook app open, tap on your photo.
2. In the left bottom, click settings icon.
3. Tap on the Office 365 icon.
4. Tap on Automatic replies.
5. Turn on Automatic replies and edit the out of office message and settings.
6. Close the Outlook app.
Please view this step by step video: