If I change an email template, will it change in all my existing sequences? And is there a way to have a link trigger in the footer? I have a couple changes I want to make to all that stuff at the bottom of the email so people can unsubscribe from different types of emails but I want to make sure it will automatically change everywhere in ConvertKit since I've a bunch of automations and sequences now. I also can't seem to do a link trigger there. I'd like to have the option to only unsubscribe from certain things and not everything. Is there a way to do that? Thanks!