Opt in/out feature improvement

[#1]

If  the dev team could consider adding a better web-form for users asking to be re-added to a mailing list it would be greatly helpful!

Scenario:

Our firm markets to several thousand people at once, sometimes clients unsubscribe themselves, only a month later to email our marketing team to be re-added to our mailing list. Since they themselves used the unsubscribe link at the bottom of the eMarketing email and conceivably have deleted the email, they can no longer open the email, access the unsubscribe link, and opt back in. There's two issues here:
1. They've likely deleted the email and the link that they used to unsubscribe, or

2. It's confusing to tell users we can't add them back, but instead they need to find the email, click the link, and re-add themselves. 

If there were a general form, hosted on the Act eMarketing website that could be freely dispensed to end-users for opting back-in, it would be a lot more clear for our clients and allow us to better market to our account-base. 

Conceivably, other Act eMarketing users have this same problem.....