In recent Years Nick has started to air a bunch of reboots and spinoffs (The Casagrandes, Kamp Koral, and The Patrick Star Show) which all suck imo. MiddleMost Post however is an original cartoon that was greenlit by Nickelodeon and it is actually really good. It's got everything a good show needs, it's funny, it's got likeable characters, nice animation, very entertaining, and an interesting plot. The shows concept of delivering mail to everyone is kinda similar to a certain awful Nickelodeon show about two ducks delivering bread to everyone, however this show is actually good while Breadwinners was a bunch of cringe crap. I hope this show sticks around as I will definitely tune in to watch it, and while I love both Spongebob and The Loud House it's always nice to have more of a variety on a channel, especially if the new show is good like MiddleMost Post.
