I feel like the "Forward to a Friend" feature is missing a key ingredient. And that is allowing the person you forward it too to subscribe to that email list. Can the lead-in on the forwarded email have an automatic link to the subscribe form in the case the recipient would want to sign up?
Thanks for the suggestion. It isn't currently possible to automate, but you could just put a section in your email "Recieved this from a friend and want to sign up? Click here to subscribe" and link it to your website signup form.
I'd like to second the request for that feature. I've used "Received this from a friend and want to sign up? Click here to subscribe" before but it's less than ideal.
I'd love to see a checkbox on the Forward to Friend customization page that would allow a subscription link to be added after the friends message.
Third request for this feature. I have a client asking me right now why I can't do it in his newsletter!
Me to! :)