Blocking a contact on the Iphone?

So of course everyone can go through either break ups, threats, or just people you do not want to be affiliated with.

What I'm asking is, if I were to block a contact through the phone settings. And once they're blocked, they're blocked. Of course when they try to send an imessage or text message, it won't go through. But when I choose to unblock one day, will the message come through? Basically will I have a pending message/s?

I don't think you get anything pending if you unblock

I have a question, when you block a number and delete the contact, does it remain blocked?

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