If you're getting a Page Not Found Error when clicking on the Unsubscribe or Microsite/View in HTML links within your emails, check these points:
Pasting Issues
Did you possibly copy or cut and then paste the Snippet? If you did, delete it and reinsert it via the link manager. This can particularly be an issue if you were working on your email in another tool, such as Microsoft Word, where pasting in content can bring additional formatting that email clients may not be able to properly process.
Incorrectly Formatted Links
Right Click on the link when you're in the template. Check to make sure the URL field shows the following:
- Unsubscribe: ${Gears.unsubscribe()}
- Microsite / View in HTML: ${Gears.microsite()}
If not, change them to say this, or reinsert the snippets.
DNS Issues
Some Organizations have separate internal and external DNS settings, and when they set up a CNAME to brand their links, they mistakenly only set it up in their external DNS settings. In this scenario, your links may be working correctly for your customers, but do not work for you. You can test this by sending to someone not on your company network and see if the links work for them. If they do, ask your network administrator to update your internal DNS settings to recognize your CNAME as well.