It's simple to open a received message to edit it or change the format of messages.
You can use this method to add notes to a message or add attachments to a message. You don't need to go into edit mode to edit the subject field: simply type in the subject field of an open message to make changes.
To change the message format (HTML to plain text), look on the Options tab.
- Open the message.
- On the opened message's ribbon or menus: In Outlook 2010 and newer: Go to Actions, Edit Message (Actions is in the Move section of the ribbon)
In Outlook 2007: Click on Other Actions, Edit message
- Edit the message and then click Save to save the changes. Close and cancel to discard the changes.
How to Convert a Message to Plain Text Format
Changes are not saved until you Save the message. You can reply or forward the edited message without saving it. (Change the format before hitting Reply to use quote prefix for that format.)