A forward to a friend link encourages your recipients to pass your campaign around to other friends and colleagues.
When a recipient clicks your forward to a friend link, they are taken to a simple page (pictured below) where they can specify the names and email addresses of up to 5 friends at a time to send your campaign to. This page can be optionally branded with your own logo.
The best part is, you can track who is forwarding your campaign and how many people they are forwarding to from your campaign reports.
How do I add it to my campaign?
You'll find this option under Step 1 during the campaign creation process. Adding a forward to a friend link is as simple as clicking the checkbox 'Optional Campaign Goodies, then customizing text. Just remember to include the tag [forward_to_friend] tag anywhere you'd like in your email.
How do I measure these forwards?
If you send a campaign with a forward to a friend link, a Forward to a Friend Activity Report is available in your campaign reports. This report lists all the recipients that forwarded your email, as well as how many people they forwarded it to.