On the Tools menu, click Account Settings. You can check the Account Settings dialog box in Outlook for the types of e-mail accounts in your Outlook profile. Both are required to use the recall feature. If you do not see the Recall This Message command, then probably you do not have an Exchange Server account or you are not using Microsoft Office Outlook 2007. If you’re sending a replacement message, compose the message, and then click Send. Note: If you are sending the message to a large number of people, you may want to clear the Tell me if recall succeeds or fails for each recipient check box. In the public folder, it is the reader's rights, not the sender's, that determine the success or failure of the recall.
If the recipient reads the original message and then marks it as unread, it is considered never read and recall is successful. Both the old and new messages remain in the public folder. If a user who has any other public folder rights opens the recall message, the recall fails, and the user receives a message that states the recall failed. If the recipient has already marked the original message as read, he or she is informed that the recall failed, and only the recall message is deleted. You, the sender, receive a message that states the recall succeeded. If the recipient who reads the recall message has read access to all the items in the public folder but didn’t read the original message, the recall succeeds, and only the new message remains. You recall the original message and replace it with a new one. If the recipient opens the original message first, the recall fails, and both the old and new messages are available. If the recipient opens the recall message first, the original message is deleted, and the recipient is informed that you, the sender, deleted the message from his or her mailbox. On the recipient's computer, one of the following results occurs: This results in behavior similar to what occurs when Outlook isn’t configured to automatically process messages. On the recipient's computer, either by rule or by action of the recipient, both messages are moved to the same folder. The original message and the new message are both available to the recipient. This occurs regardless of the Outlook configurations and the read status of the message. If the recall message and the original message exist in separate folders, the recipient receives a message that states a recall attempt failed. On the recipient's computer, either by rule or by action of the recipient, the original message is moved out of the Inbox to another folder and the recall message remains in the Inbox (or it is moved to another folder also). However, the message remains in the recipient's Outlook folder. Note: If the original message is marked as read (viewing in the Reading Pane isn’t reading in this scenario) when the recall message is processed, the recipient is informed that you, the sender, want to delete the message.