Microsoft's new Outlook now supports offline email attachments

PCWorld reports that Microsoft's new Outlook app for Windows 11 now supports adding email attachments while offline, with messages automatically sending once internet reconnects. This update addresses a key limitation for users who frequently work without reliable internet connections or need to prepare emails in advance. Despite these improvements, many users continue preferring the classic Outlook or web version over Microsoft's repackaged web app approach. For several years, Microsoft has been trying to persuade users to move from the classic Outlook app for Windows 11 to the new version, which is (essentially) a repackaged web app. The latest update offers improved offline support, making it possible to add attachments to emails without an internet connection. The emails will send automatically once you've got a working connection again. According to Windows Latest, Microsoft has been testing this feature since October 2025, with a wider rollout only now beginning. Although the "new" Outlook has improved recently, many still prefer the classic app or the web version. This article originally appeared on our sister publication PC för Alla and was translated and localized from Swedish.