My sign up form looks like it is working, but no one is being added to the list. Why is that?

read

My sign up form looks like it is working, but no one is being added to the list. Why is that?

If your list has double opt-in enabled, new subscribers will receive an email after opting in that prompts them to confirm their email address. Only after a new subscriber confirms their email address will they be added to your list. If you’re testing out a new form with a fake or invalid test email addresses and you have double opt-in enabled, you will not see these email addresses added to your list.