In Gmail when you have an email from a newslist, you get a 'unsubscribe' link next to the email address, like this:
Google+ <noreply-67e4f7ae@plus.google.com> Unsubscribe
If you click it, it says:
Unsubscribe from Google+ Google+ provides a page at plus.google.com where you can manage your email subscriptions. Learn more
Okay, when I send newsletters, I get the following message with 'undefined' instead, note that the link is actually right, it's just the text label that's wrong:
Unsubscribe from newslist@mywebsite.com Sender provides a page at undefined where you can manage your email subscriptions. Learn more
I'm sending the following header:
List-Unsubscribe: <mailto:unsubscribe-request@mywebsite.com?subject=Unsubscribe+my+newsletter>,
<http://www.mywebsite.com/instant_unsubscribe.php?id=111&email=myemail@mywebsite.com>
Any ideas how I stop is saying 'undefined' and change 'sender' to my website?
Thanks!