Outlook application on iPhone
To setup out of the office replies, tap settings > tap your Office365 or Exchange account > tap Automatic Replies > toggle the switch on.
You may choose:
1.) Reply to everyone
2.) Reply only to my organization
You can also set up a different messages for your organization and external senders.
Tap done once you have set up your automatic reply.
Sign in to.
Tap the Settings icon that looks like a gear in the top right corner.
Choose Automatic Replies.
Check the box Send Automatic Replies.
Choose the start and end date, then check the box Send replies only during this time period.
Below that is a blank body of text. Enter the message you want people to receive as your out of office reply.
You can check the box for sending Ooo replies to everyone or just to your contacts.
Click Ok at the top when you’re done.
If you set a start and end time and check the box, “Send replies only during this time period,” your out of office reply will automatically turn off. If not, you can easily turn off by revisiting settings, clicking Automatic Replies, and checking the box, “Don’t send automatic replies.”
Outlook on Windows