- Merge tag links, such as *|ARCHIVE|* or *|FORWARD|*, cannot be tracked in click reports.
- Because mailto: links go to an email program instead of a web page, they can't be tracked as clicks in your campaign reports.
- When you create a link in your campaign, we support mailto:, http, and https protocols. We don't support FTP links or mobile deep links.
- It's best to avoid shortened links in your campaigns, since these can sometimes trigger spam filters.