Posting a message

Applies to: Outlook 2013 | Outlook 2016

Posting a message is similar to sending a message. The main difference is the destination. Rather than being directed to one or more recipients across one or more messaging systems, a posted message remains in a folder in the current message store.

To post a message

1. Open the destination folder by calling IMsgStore::OpenEntry. If the destination folder is the Inbox, locate the entry identifier to pass to OpenEntry by calling IMsgStore::GetReceiveFolder.

2. Call IMAPIFolder::CreateMessage to create the message.

3. Call the message's IMAPIProp::SetProps method to set:

   • The MSGFLAG_READ flag in the PidTagMessageFlags ( PR_MESSAGE_FLAGS) property.

   • The PR_SENDER properties.

   • The PR_SENT_REPRESENTING properties.

   • The PR_RECEIPT_TIME (PidTagReceiptTime) property.

   • The PR_RTF_COMPRESSED (PidTagRtfCompressed) or PR_BODY (PidTagBody) property.

   • The PR_SUBJECT (PidTagSubject) property.

   • The PR_MESSAGE_CLASS (PidTagMessageClass) property.

   • Any properties required by the message class.

4. Call the message's IMAPIProp::SaveChanges method to save the message.

5. If necessary, create an attachment, set its properties, and save it. For more information about adding attachments to messages, see Creating a Message Attachment.

6. Call IMessage::SaveChanges to save the message. At this point it will appear in the contents table of the destination folder.

Notice that you do not create a recipient list. Instead, you set several properties that are normally set by a transport provider for a sent message.

If you want to save a message intermittently before having it appear in the contents table of the visible folder, create it instead in a hidden folder such as the root folder of the IPM subtree and then move it to the target folder.