We have different groups and segments of subscribers, to which we send weekly newsletters, each from a different "sender address". (We are an online magazine from Argentina.) With our previous email platform, we could have subscribers "unsubscribe" to each single newsletters or "sender address". Can we do the same with MailerLite? What happens now is that if a subscriber wants to unsubscribe from, say, our Thursdays newsletter, he or she becomes completely "inactive", stops receiving any emails from us. Is there a way so that the "unsubscribe" button doesn't affect the whole account but inly certain parts of it?