'The pleasure is/was all mine' - this is the full way of saying it. It's a way of graciously saying, 'You're welcome." Or the very informal, 'No probs!' (no problem) 'With pleasure' is fine too.

Thank you, Anne, I got you.

The pleasure is mine. The pleasure is all mine. It is a response to someone thanking you for something

Thank you a lot for your reply , Brad. I got it.

Yes, but add "The" (that is, "The pleasure is mine"). You can also say, "My pleasure."