WWW.PAWCHAT.COM
Society, People, Pen Pals, Snail Mail - PawChat. Free penpal site for people with pets.
https://www.pawchat.com/
Snails R us
Society, People, Pen Pals, Snail Mail - Snails R Us. Search for penpals all over the world by region.
https://snailsrus.tripod.com/
Prison 1
Society, People, Pen Pals, Prisoners and Inmates - Prison 1. Free for inmates to place ads and viewers to use.
http://www.1prison.com
Surrogate Sisters
Society, People, Pen Pals, Prisoners and Inmates - Surrogate Sisters. No charge to view inmates' addresses.
http://www.surrogatesisters.com