What does "Pending" mean in subscriber status?
When listing out your subscribers in your account, you may see something that appear like this:
When you see "Pending" in the "Status" column, it means we've sent a confirmation message to that subscriber, while they have yet to click on the link inside of the message to confirm their subscription.
The subscriber was most likely sent the confirmation message because you have confirmed opt-in enabled for your sign up forms, imports, or API integrations. If you previously disabled the confirmed step, then this could be due to security or other reasons triggered in our system.
As soon as your subscriber clicks on the link in the message they were sent, they'll become active in your list and begin to receive the messages you've scheduled.