Read Outlook OST File

Aspose.Email for .NET provides API for reading Microsoft Outlook OST files. You can load an OST file from disk or stream in an instance of Aspose.Email.Outlook.Pst.PersonalStorage class and get the information about its contents e.g. folders, subfolders and messages. Microsoft Outlook creates PST file for email storage when you use POP3 or IMAP mail servers for downloading messages. It creates OST file when you use Microsoft Exchange as your mail server. OST also supports large file sizes as compared to PST. Reading an OST file with Aspose.Email is exactly similar to reading a PST file. Same code can read both PST and OST file, you just have to provide the correct file name to PersonalStorage.FromFile() method.

Programming Sample

[C#]

// load the Outlook PST file
string strBaseFolder = @"E:\Data\Emails\";
string strPSTFile = @"Exchange 2010 Emails.ost";
PersonalStorage pst = PersonalStorage.FromFile(strBaseFolder + strPSTFile);

// get the Display Name of the PST file
Console.WriteLine("Display Name: " + pst.DisplayName);
 

[VB.NET]

' load the Outlook PST file
Dim strBaseFolder As String = "E:\Data\Emails\"
Dim strPSTFile As String = "Exchange 2010 Emails.ost"
Dim pst As PersonalStorage = PersonalStorage.FromFile(strBaseFolder & strPSTFile)

' get the Display Name of the PST file
Console.WriteLine("Display Name: " & pst.DisplayName)
 

For performing other operations with OST files, please refer to the following pages: Read Outlook PST File and Get Folders and Subfolders Information Get the Messages Information from the Outlook PST File Extract Messages from Outlook PST File and Save to Disk or Stream in MSG Format Access Contacts Information from Outlook PST File and Save Contact to Disk in MSG format