Search Knowledge Base: (Moved) How do I set up a vacation message/autoreply using the Office365/Volmail Outlook on the Web? This article has been moved to the new OIT Knowledge Base. This article will be retired. Please update your bookmark. Sign into Outlook on the Web. In the App Launcher , choose Outlook. At the top of the page, select Settings. Select Mail under Your app settings. Select Mail > Automatic Processing > Automatic replies on the left. Customize your automatic reply. Choose Save. Need more help?