Oh yeah, carrier pigeons, I'd kind of forgotten about those. Reminds me of one of those Avengers shorts with Banner and Thor talking to Ironman on the phone and Thor's all "I don't have a phone, send a raven!" Maybe that could become a standard long distance means of communication. Discworld's semaphore towers could also be a thing that some enterprising individual comes up with.
Those are based on the real-world Chappe telegraph. There's great and incorporated into the Far Talker I developed.Discworld's semaphore towers
Same. Most people wouldn't know anyone farther than the nearest town/city anyway, so it doesn't really matter. Organizations and diplomats would rely on messengers, unless they're particularly powerful enough to have some magic. Teleportation Circles in particular bug me, so I have them be closely held secrets that are always under guard (it is a backdoor into your stronghold, after all).In my campaign worlds, they generally don't!
I've got a few, very powerful NPC that would have it. Largely just royalty and powerful churches, but Flanaess spanning organizations like the Circle of Eight and the Old Faith use magic to send instructions to their agents too. It helps show their power, and when the PCs attain similar abilities it shows them how special it really is.But I leave the fancy magic communication to the characters! It makes it feel more special.