

The two file formats store all the items of the mailbox, including emails, contacts, tasks, events, notes, etc. Whereas, when a user chooses to work in offline mode with Exchange account, then Outlook stores the data in OLM format. When Outlook is configured with a POP3 account, the data is stored in PST format. MS Outlook for Windows supports two different file formats – PST and OST files based on your account configuration.

Some important differences between these two data files show their importance and usefulness. The biggest difference between both Outlook (Windows and Mac) is their data file (PST and OLM). In the Windows setting, you can use MS Outlook and in a Mac environment, you can install and run Outlook for Mac.īut, when it comes to their functions, both applications remain the same, and their mailbox displays similar types of folders. However, to have access to these mailboxes, one is required an email client that offers a GUI (Graphical User Interface) – based appearance to access different folders of a single mailbox account. Microsoft Exchange Server allows the users to create multiple mailboxes that are saved securely in the server and helps users in their email management.
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But, switching from Outlook for Mac to Outlook for Windows requires file conversion, since Outlook for Mac uses ( ) to store data whereas Outlook for Windows saves data in PST format. Therefore, a lot of users are likely to switch from Outlook for Mac to Windows Outlook for better functionalities. Outlook for Mac and Outlook for Windows have various differences when it comes to features and functionalities.
