Pity Skyrim's humble courier. He's charged with tracking you down in an incredibly dangerous fantasy world to deliver notes, letters, and quest instructions. While as the Dragonborn you're definitely recognizable, finding you as you race around the map killing monsters and looting dungeons can't be easy for the young man (though he does at times appear to be quite psychic), and the truly tragic thing is that this poor fellow doesn't even have his own place to live and rest between his deliveries.
Thankfully, celebrated Skyrim modder Arthmoor has stepped in with an equal dose of mod skills and empathy, and the Provincial Courier Service mod is the result, giving our favorite letter-carrier a proper home and base of operations. In it you'll find a desk, a bed, a dining area, a kitchen, and other creature comforts the courier can enjoy when he's not running all over the world trying to stick a letter in your pants.
The mod also provides an optional home delivery service, which means the courier can just bring his missives to your house (or one of your houses, if you're doing quite well) instead of materializing in your immediate vicinity, which certainly sounds like an improvement from his perspective. And, now that you can track him down for a change, you can also swing by his shack during your travels and collect your mail from him there. Everybody wins.
Okay, it's not a palace, just a humble abode, but we can all agree the fellow deserves it. You'll find the courier's new digs on the road outside Whiterun, and you'll find the mod, and the instructions on how to install it, on its page at Nexus Mods.