This includes being unable to work with your items when you are using Microsoft Outlook Web Access with the Exchange Server email account or when you are working on another computer. pst file, but if you do this, it has several disadvantages.

Outlook can be configured to deliver new items to a. pst file on your computer, you can free up storage space in the mailbox on your mail server. pst file is kept on your computer, it is not subject to mailbox size limits on the mail server. Your items can also be moved or archived to an Outlook Data File (.pst). Another type of account is an HTTP or web-based account that works similar to IMAP email accounts. The most common types of accounts are referred to by their Internet protocol names: POP3 and IMAP. The ISP also provides one or more email accounts. Home users usually use an Internet service provider (ISP) to connect to the Internet. This is the most common file in which information in Outlook is saved by home users or in small organizations. ost).Ī Personal Folders file (.pst) is an Outlook data file that stores your messages and other items on your computer. Introduction to Outlook Data Files (.pst and. Outlook Data Files (.ost) are always copies of items that are saved on a mail server and do not have to be backed up like Outlook Data Files (.pst). This type of data file is also used for accounts that you set up with the Outlook Connector for (formerly Hotmail).

Offline Outlook Data Files (.ost) are used when you have an Exchange account and want to work offline or use or use the default Cached Exchange Mode.

When you want to create archives or back up your Outlook folders and items on your computer, such as Exchange accounts, you must create and use additional.

Outlook Data Files (.pst) are used for POP3, IMAP, and web-based mail accounts.

The primary differences between the two types of Outlook data files are as follows: To allow you to work with your messages even when you cannot connect to the mail server, a second type of data file that is named an Offline Outlook Data File (.ost) is kept on your computer.

If you are using a Microsoft Exchange account, your items are usually delivered to and saved on the mail server.

An Outlook Data File (.pst) is used for most accounts. There are two types of Outlook data files used by Outlook for Windows.

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