I unsubscribed a user from a mailing list, but their email remains in the delivery queue.
I want to send 10 emails over the period of 10 weeks to subscribers. So I set it up in automation to do so. Users subscribe to my list, and the 10 emails are then sent to queue, scheduled to be delivered. When a user unsubscribes, the emails remain in the queue. I must then manually remove their emails one by one. It's very tedious.