[signed0]

What if instead one just focused on lowering the amount of times someone forwards an email containing an unsubscribe link.

Perhaps a "send to a friend" link in the email would help?

[eru]

But I like my email client (say gmail), I don't want to use someone else's half-baked solution. And especially the highly engaged users would have to copy-and-paste the 85 email addresses they forward to.

[signed0]

Could the site just generate a really long mailto:// url?

[eru]

You somehow have to tell the site which people to forward to. How do you get the information there?

[signed0]

I was thinking the person would click on the mailto link and it would open up in their default email client. From there they could add the contacts from their contact list.

[eru]

Oh, yeah, that sounds reasonable.

[lessnonymous]

This link is common in these emails. But as a user it's annoying as all the people I'd forward it to are in my address book.

Plus I don't trust you with these email addresses. I'll send the email on thankyouverymuch.

[signed0]

I'd imagine people that mass forward an advert they receive are much more trusting.