How to update message properties in PST without extraction

Aspose.Email Product Family
1

Hi,


Is it possible to update message properties without extracting the complete message first?
2

Hi Robert,

Thank you for writing to Aspose support team.

FolderInfo.ChangeMessages can be used to update PST messages without extracting them. Please give it a try and share the feedback.

string dataDir = path + "test.pst";
PersonalStorage personalStorage = PersonalStorage.FromFile(dataDir);
FolderInfo inbox = personalStorage.RootFolder.GetSubFolder("Inbox");
MessageInfoCollection messages = inbox.GetContents();
IList changeList = new List();

foreach (MessageInfo messageInfo in messages)
{
    changeList.Add(messageInfo.EntryIdString);
}

// Compose the new properties
MapiPropertyCollection updatedProperties = new MapiPropertyCollection();
updatedProperties.Add(MapiPropertyTag.PR_SUBJECT_W, new MapiProperty(MapiPropertyTag.PR_SUBJECT_W, Encoding.Unicode.GetBytes("New Subject")));
updatedProperties.Add(MapiPropertyTag.PR_IMPORTANCE, new MapiProperty(MapiPropertyTag.PR_IMPORTANCE, BitConverter.GetBytes((long)2)));

// update messages having From = "someuser@domain.com" with new properties
inbox.ChangeMessages(changeList, updatedProperties);

You may also visit here for more samples:


Updating Message Properties in a PST File
Updating Custom Properties in a PST File