Use automatic replies to notify others that you are out of town, on vacation, or simply not available to respond to email messages. Currently, only Outlook.com, Hotmail, and Office 365 accounts support automatic replies.
Turn on Automatic Replies
Once you turn on automatic replies, you can create a custom message to send whenever you receive a new email. You can choose to send automatic replies only to those people whose addresses reside in the contacts folders on Outlook.com, Hotmail, and Office 365, or to everyone who emails you.
Choose Settings > Automatic Replies.
Choose an account and make sure the Send Automatic Replies slider is set to On.
Type the response you want to send. Your message is saved automatically.
If you want to send the automatic reply only to the contacts you have, choose Send replies only to my contacts checkbox.