Auto responder unsubcribe options

How does someone unsubscribe from one of my auto responder emails?

Unfortunately, it's not possible to unsubscribe to an email autoresponder, if it's configured the user will receive the email as soon as the submission is sent. 

Now, if you want to prevent them to receive the autoresponder, you may add a check box asking if they want to receive the email, if they select it then you send the email, otherwise nothing will happen. 

This guide will help you sending the email if the check box is filled: https://www.jotform.com/help/167-How-to-Send-Email-Based-on-User-s-Answer 

Thanks.