ActiveSync keeps all the Exchange data synchronized between devices, so when email is replied to, deleted, or moved on your computer, for example, that change is immediately made on the Exchange server as well, and then synchronized with any other devices you might use, such as Outlook on a mobile device.ĪctiveSync isn't the only option, though an organization can choose to manage its email using IMAP or POP as well. This most often happens using a technology called Exchange ActiveSync.
When you use a Microsoft Exchange account, email messages - along with calendar information and other Outlook details - are generally kept in sync between your Outlook client on a computer or mobile device and the Exchange server. An organization can maintain its own Exchange server or rely on Microsoft to do that via the cloud using a Microsoft 365 account.
Microsoft Exchange relies on the use of an Exchange server - a computer on which individual users' Exchange accounts are configured.
