Click File.
2. Click Automatic Replies.
3. Select Send automatic replies.
4. Write the message you want sent to your coworkers. You may want to suggest other colleagues that your coworkers should reach out to in your absence.
5. Click OK. To send responses to senders outside of your organization, click Outside My Organization and then fill in a separate message. To set a time range for your out of office message, click "Only send during this time range" and select parameters.
Now your colleagues will receive your out of office reply when they contact you, and they'll also be notified that the reply is set when they add you to an email.