All campaigns must include an unsubscribe link, there are several easy ways to do this:
1. Type [UNSUBSCRIBE_LINK] at the bottom of your email, this will be replaced with an unsubscribe link when the email is sent. The link text will be "Unsubscribe"
2. If you want to customise the link text then you will need to manually create the unsubscribe link, but this is easy to do, type the text you want such as "Unsubscribe me from future emails". Select the text and click the "Insert/Edit Link" button (the button looks like a chain link). The "Link" dialog window will pop up.
If you are using the drag and drop editor simply click on "Special links" and choose "Unsubscribe"
Or if you are using the text editor then change the "Protocol" to "<other>" and type [UNSUBSCRIBE_URL] into the URL field. See screenshot below:
The above two methods will display a page where the subscriber must confirm their unsubscribe, this is usually the best option because it ensures that they didn't click the unsubscribe by mistake and it also gives them the opportunity to let you know why they have unsubscribed. But if you prefer that they are unsubscribed instantly there are two alternatives to the above: