This guide explains how to set up an automatic Out of Office reply in Microsoft Outlook for both internal (colleagues) and external (people outside your organisation) emails. You can also schedule a start and end date so it runs automatically during the holiday period (e.g., 19 December – 5 January).
1. Outlook on Desktop (Windows or Mac)
Step 1 – Open the Automatic Replies Window
Open Outlook.
Go to the File tab (top left), or click the settings icon on the top right side toolbar
Select Automatic Replies (Out of Office).
Step 2 – Turn On Automatic Replies
In the pop-up window, select Send automatic replies or Turn on automatic replies.
Tick Only send during this time range.
Set the Start time to 19 December and the End time to 5 January.
Step 3 – Enter Internal and External Messages
Under the Inside My Organization tab, type your internal message, for example:
Click the Outside My Organization tab, tick Auto-reply to people outside my organization or Send Replies outside your organisation, and enter your external message, for example:
Click OK to save.
2. Outlook Mobile App (iOS/Android)
Step 1 – Open Settings
Open the Outlook mobile app.
Tap your profile icon (top left).
Tap the gear icon (Settings) at the bottom.
Step 2 – Enable Automatic Replies
Under Mail accounts, choose your work account.
Tap Automatic replies.
Toggle Automatic replies to On.
Choose Send replies only during a time period and set the Start and End dates (19 December – 5 January).
Step 3 – Enter Your Messages
Enter your internal reply message.
If available, enter a separate external message (note: on mobile, this may show as “Reply to everyone outside my organization”).
Save and exit.
Notes & Tips
Make sure both internal and external messages are set.
If you’re unsure whether it worked, send yourself a test email from a personal (non-work) account.
You can update or cancel the Out of Office at any time by repeating the steps.
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