PoliteMail gives you the option to edit any Link or Smart Attachment that has already been sent in a tracked email. Changing the URL will redirect any future clicks from emails previously sent containing that tracked link.
To change a Link, navigate to Outlook > Politemail > Content > Links. Select the link by clicking on it. Now hit the Edit button. You can now change both the URL and the Link Text. Click Update when done.
Editing Smart Attachments
To edit a Smart Attachment or Image, go to the PoliteMail tab > Content > Smart Attachments. Select the attachment by clicking on it. Navigate to the Actions pull-down menu and choose Replace. The replaced image must be in the same format as the original image (.png, .tiff, etc.)
Note: Clicking Edit in the Smart Attachment tab will only allow you to change the name of the link. You need to use the Replace feature in order to change the content completely.