We always suggest using our EasyEditor to build your emails. It provides an easy and effective way to craft beautiful campaigns. If you're uploading HTML code created in third-party software, we're not able to guarantee it'll look exactly the same once uploaded to our EasyEditor.
If you do use a custom-coded template, you need some link placeholders to enable certain types of system link in your campaigns. Here are the most common ones:
| Code | What is it? | 
| https://$UNSUB$ | Unsubscribe link | 
| https://$CANTREAD$ | View in browser | 
| https://$OPTINLINK$ | Double opt-in link | 
| https://$PREFCENTRE$ | Preference centre link | 
If you upload HTML code without an unsubscribe link included, you'll receive a Campaign save error. If you get this error, you must include https://$UNSUB$ (an unsubscribe link) in your HTML code and save again.

