Message Delivery - Is That the Right Kind of Guarantees?

There's concept in the messaging space at least once delivery, meaning send a message. I want the system to always fail on the side of it's going to get there eventually. And if it gets there twice, we can live with that. This sounds like the type of guarantee you want, you want every piece of data to be processed. If you process something twice and get the same answer twice and write it in the end point, twice, that seems like no one would even notice. Is that the right kind of guarantees for a system like this? Yeah, it is.