Out of Office in Outlook Exchange: Setup and Scheduling

To set an out-of-office message for an Exchange mailbox, open Outlook’s Automatic Replies settings, turn on automatic replies, write your message, and—if you want it to start and stop automatically—set a time range. Exchange sends the replies from the mailbox while you are away. You will need access to the mailbox and an Exchange or Microsoft 365 work or school account; the exact menu depends on which version of Outlook you use.

What You’ll Need

An Exchange or Microsoft 365 work or school mailbox. Automatic Replies is an Exchange feature and may not be available for a POP or IMAP account.
Permission to change automatic replies for the mailbox. If you are setting this up for a shared mailbox, you may need a mailbox owner or administrator to grant the appropriate access.
The dates and times you will be away, if you want replies to switch on and off automatically, plus the message you want colleagues and other senders to receive.

Step-by-Step

Open the right mailbox in Outlook. Sign in to the Exchange account that should send the reply. If you have multiple accounts, check the account name before changing settings; automatic replies apply to a particular mailbox, not necessarily every account shown in Outlook. You can also set replies in Outlook on the web by signing in to your organization’s Microsoft 365 or Outlook web page.
Find Automatic Replies. In classic Outlook for Windows, select File > Automatic Replies. In new Outlook for Windows, select the Settings gear, then Accounts > Automatic replies. In Outlook on the web, select the Settings gear, then Accounts > Automatic replies; if the option is not visible, use the settings search box for Automatic replies. Outlook menus can vary slightly as Microsoft updates the app. In Outlook for Mac, look under Tools > Automatic Replies; in some builds, account settings or the app’s settings search may be the quickest route.
Turn on the replies. Choose the option to send automatic replies. Classic Outlook for Windows labels this Send automatic replies; the web and newer apps may show a switch. If you only need a message temporarily and your version offers a time range, select the option to send replies only during a specified period. If you do not set a range, remember that you may need to turn replies off yourself when you return.
Set the start and end time, if available. Choose a start time and an end time that reflect when you want messages sent. Check the displayed time zone and account for it if you or your colleagues are in different regions. A scheduled end time is useful because it prevents replies continuing after you are back. If your interface does not offer scheduling, turn replies on before leaving and set a reminder to disable them after you return.
Write the message for people inside your organization. Enter a concise reply in the internal message area. Include your return date, whether you will check email, and a useful alternative contact if there is one. For example: I am away from email through Friday, June 12, and will reply when I return on Monday, June 15. For urgent account questions, contact Jordan Lee at the support desk. Use a specific date rather than only saying you will be back soon.
Decide whether to reply to people outside the organization. If your Outlook version provides a separate external message, enable replies to people outside your organization only if appropriate, then enter a suitable message. Classic Outlook for Windows has an Inside My Organization and an Outside My Organization tab. Depending on the version, external replies can be limited to people in your contacts or sent to all external senders. Choose deliberately: a reply to all external senders may disclose your absence to people you do not know. If the external option is disabled by your organization, ask your administrator whether that is intentional.
Save the settings and confirm the status. Select Save, OK, or the equivalent button in the dialog. In classic Outlook, OK closes the Automatic Replies window and applies the selection. Reopen the setting or look for the status indicator to confirm replies are on and the scheduled period is correct. If practical, send a test message from a different account, remembering that Exchange may not send repeated automatic replies to the same sender for every message.

Once enabled, the reply is handled by the Exchange mailbox, so Outlook does not generally have to remain open on your computer. This is different from creating a rule that replies only while Outlook is running. If the mailbox is hosted on a system that does not support Exchange Automatic Replies, the setting may be absent or behave differently.

Common Mistakes

Setting the reply on the wrong account. Outlook can show several mailboxes at once. Confirm the account or mailbox name in the settings before saving, especially if you have both personal and work accounts open.
Forgetting to schedule an end time. Without a start and end range, replies may remain enabled until someone turns them off. Set an end date when possible, or add a calendar reminder to switch the feature off.
Writing a message that is too vague. A reply such as I am away does not tell people when you will return or what to do about urgent work. Add a clear return date and an appropriate backup contact, if one is available.
Assuming external replies are automatically enabled. Some Outlook versions keep external replies separate, while some organizations restrict them. Review the external setting instead of assuming that the internal message will go to every sender.
Using an Outlook rule instead of Automatic Replies. A rule that sends a template can require Outlook to remain open, and poorly configured rules can create loops or duplicate responses. For an Exchange mailbox, use the built-in Automatic Replies feature unless your administrator advises otherwise.
Including sensitive details. Avoid giving unnecessary information about travel, home addresses, or private schedules. External messages may go to people outside your company, depending on the option selected.

Tips

Keep the message short and useful. State the final day you will be away, the date you expect to return, and whether someone else can help. If there is no backup, say when you expect to respond rather than naming a colleague who has not agreed to cover your work. Use separate internal and external messages when coworkers need more operational detail than customers or vendors do.

Before enabling external replies, consider what a sender actually needs to know. A neutral message can say that you are unavailable until a date and provide a general team contact. Do not share confidential project information, account details, or a colleague’s direct contact information unless your workplace permits it.

Set the period using the mailbox’s displayed time zone, not an assumption about your laptop’s clock. If you are travelling, verify which time zone Outlook uses for the schedule. For a handover that changes during your absence, give senders a stable team address or shared support channel rather than a person who may also be away.

Automatic replies are not the same as forwarding, delegation, or a read receipt. They tell senders you are away; they do not automatically route incoming mail to a colleague or give that person access to your inbox. Arrange access and coverage separately with your organization if needed. Also, Exchange commonly limits repeated automatic replies to the same sender during an absence period, so a second message from that person may not trigger another reply.

Troubleshooting

The Automatic Replies option is missing. Check whether the selected account is an Exchange or Microsoft 365 work or school mailbox. POP and IMAP accounts do not use the same Exchange automatic-reply setting. If you are working in the wrong Outlook profile, switch to the work mailbox. For a shared mailbox, open or select that mailbox and make sure you have permission to manage its settings. If the account should be Exchange but the option remains missing, contact your IT administrator.

Replies are not being sent. Confirm that automatic replies are switched on, that the current date and time fall inside the scheduled range, and that the message was saved. Check whether you are testing by repeatedly emailing from the same address; Exchange may suppress repeated replies to that sender. Try a different sender, and check both the inbox and junk folder for the test message. If only external senders do not receive a reply, review the external-reply option and ask your administrator whether organization policy blocks it.

Replies started or stopped at the wrong time. Reopen the setting and check the start date, end date, time, and time zone. A date entered in another region’s time zone can look correct but take effect earlier or later than expected. If the schedule is correct but the status is not updating, sign out and back in or check the mailbox using Outlook on the web. This can help distinguish a desktop display or sync issue from a mailbox setting.

The message is not going to a shared mailbox’s senders. Verify that you changed Automatic Replies for the shared mailbox itself, rather than your own mailbox. Shared mailbox controls and permissions depend on how your organization has configured access. If you cannot open the setting for that mailbox, ask the mailbox owner or administrator to grant access or set the reply for you. Do not assume that adding the shared mailbox to your folder list changes its automatic replies.

People receive an unexpected or duplicate response. Look for other automatic-reply rules, third-party mail tools, or forwarding arrangements that could also send a message. Disable only the rule you recognize and are authorized to change. If an external sender reports a duplicate or an incorrect response after you have checked the mailbox settings, give your administrator the sender address and approximate time so they can review mail-flow policies and logs.

Frequently Asked Questions

Does Outlook have to stay open for Exchange out-of-office replies?
Usually not. Exchange Automatic Replies are processed by the mailbox service, so replies can continue while your computer is shut down. A desktop rule that sends a message is different and may depend on Outlook being open.

Can I schedule automatic replies in advance?
Yes, if your Outlook version shows a time-period option. Set the start and end dates and times before you leave, then verify the time zone. If scheduling is not offered in your interface, enable the reply manually and set a reminder to turn it off.

Can I send different messages to coworkers and external senders?
Many Exchange versions let you enter separate internal and external replies. Classic Outlook for Windows provides separate organization tabs. The options available in new Outlook or Outlook on the web can vary, and an administrator may restrict external replies.

Will every email I receive trigger a reply?
No. Exchange commonly sends only one automatic reply to a sender during an absence period rather than replying to every message from that address. This avoids repeatedly filling the sender’s inbox. Do not use repeated tests from the same address to decide that the feature is broken.

Can I set an out-of-office message for a shared mailbox?
Often, if you have the required permission and can open the shared mailbox’s Automatic Replies settings. The exact steps depend on your organization’s setup. Make sure the reply is configured on the shared mailbox, not your personal mailbox, and contact an administrator if the control is unavailable.

What if I use Outlook with Gmail or another non-Exchange account?
Outlook’s Exchange Automatic Replies setting may not be available for that account. Set an absence message through the mail provider’s own settings, or ask your provider which method is supported. Avoid creating a client-side reply rule unless you understand whether it requires Outlook to remain open.

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