Depends on how dense or spread out it is.
If it’s dense and everything is in one place you might not need anything more than just going outside.
If it is spread out though you may want communication methods other than mail and if people already have the computers and existing infrastructure (many places have cables for network and phone lines) to set up a local network then that might be the best option.
I don’t need a social network in a village, I’ll just step out of my house and yell.
Depends on how dense or spread out it is. If it’s dense and everything is in one place you might not need anything more than just going outside.
If it is spread out though you may want communication methods other than mail and if people already have the computers and existing infrastructure (many places have cables for network and phone lines) to set up a local network then that might be the best option.