Paul maintained a relationship with Christian communities through letters.
Historically a number of famous friendships have been maintained through letters.
84 Charing Cross Road, the book and the movie, is a true story about a friendship that is conducted almost entirely through letters. Frank died before Helen met him.
Does this say something about the possibility of friendships/community being established or maintained through letters?
Are letters different than the internet?
Are we ruder on the internet because we are disembodied from each other or are we ruder because we are becoming less civil everywhere?