How to Edit the Subject Line
Here’s how to change the subject line of any message you receive in Outlook.
Double-click the message you want to edit to open the message in a separate window. Place the cursor in the subject line and press Ctrl-A on your keyboard to select the entire subject line. Type the subject line you want to use. Select Save in the upper-left corner of the message window. Close the message window. The new subject line appears in the Reading Pane. The message shows the original conversation topic.
How to Edit the Body
The Action menu makes it possible to make changes to the text in the body of an email message you have received.
Start Outlook. Double-click the message you want to edit to open the message in a separate window. Select Actions in the Move group. Choose Edit Message. Make any desired changes to the content of the message. For instance, you might want to add keywords or names that you can search for later. Select Save in the upper-left corner of the message window. Close the message window.