Automatic replies, also known as Out of Office (OOO) messages, are a critical feature for many professionals. They ensure that anyone who contacts you while you’re away receiving an immediate response. But a common question arises: Do automatic replies work when Outlook is closed? The short answer is: Yes, but there are some nuances to consider.

Understanding Automatic Replies
Automatic replies are designed to function without requiring the user to have Outlook open. All you need is to turn the Automatic reply on and off. This functionality is particularly important for ensuring continuous communication, even when you’re not actively using your computer. However, how automatic replies are managed depends on the type of email account you are using.
Types of Email Accounts
Exchange Server Accounts:
If you’re using an Exchange Server account (common in corporate environments), automatic replies are managed directly by the server. This means that once you set up an out-of-office message, the server handles the replies independently of your Outlook application. Therefore, even if your Outlook is closed or your computer is off, the server continues to send automatic replies.
Office 365 and Outlook.com Accounts:
Similar to Exchange Server accounts, Office 365 and Outlook.com accounts handle automatic replies on the server side. This ensures that automatic replies are sent even if your Outlook application is not running.
IMAP and POP3 Accounts:
For IMAP and POP3 accounts, the situation is a bit different. These types of accounts do not typically support server-side automatic replies. Instead, the automatic replies would need to be managed by the client application (Outlook). This means that for automatic replies to be sent, Outlook must be open and running on your computer.
How to Set Up Automatic Replies in MS Outlook?
The process of setting up automatic replies depends upon the type of account you are using. You need to follow different approaches. Like if you are using MS Outlook with a server then you can directly enable the automatic reply feature within the server but, if you have a Pop3 account then you have to create a rule to perform this task.
For Exchange Server, Office 365, and Outlook.com Accounts
- Open Outlook.
- Go to File > Automatic Replies (Out of Office).
- Select Send automatic replies.
- Set your time range (optional).
- Compose your message for internal and external contacts.
- Click OK.
For IMAP and POP3 Accounts:
Create a Rule:
- Go to File > Manage Rules & Alerts.
- Click on New Rule.
- Start from a blank rule:
- Choose Apply rule on messages I receive and click Next.
- Select conditions (e.g., received in a specific account).
Select actions:
- Choose reply using a specific template.
- Compose your message and save it as a template.
- Finish the rule setup.
Important Considerations
Connectivity: For server-side accounts, make sure that your device has been connected to the internet and synchronized with the server before you close Outlook. This ensures that your settings are updated on the server otherwise the Automatic replies not work in Outlook 365.
Synchronization: IMAP and POP3 accounts require Outlook to be running for the rules to be applied. Ensure that your computer is on and Outlook is running to keep sending automatic replies.
Account Type Verification: Verify your account type by going to File > Account Settings > Account Settings. This will help you determine if your automatic replies are server-managed or client-dependent.
Automatic replies in Outlook are designed to ensure you remain responsive, even when you’re not actively checking your emails. For Exchange Server, Office 365, and Outlook.com accounts, automatic replies will work even when Outlook is closed, as they are managed by the server. For IMAP and POP3 accounts, Outlook must remain open for automatic replies to function correctly.
Understanding the nature of your email account and configuring your automatic replies accordingly can help ensure that your communications are seamless, even during your absence. If you’re unsure about your account type or encounter issues, reaching out to your IT support or email provider can provide further assistance.