Hi i have much for sure to Say on this Topic....I did work in Prison Ministry for 3 years in a maine prison with both men and women many major rules apply.
1- you never can send money,postage stamps or anything not approved to them if you do it could cause legal problems for you.they never give up asking for money stamps ect......
2-you never can share more than whats going on only in a general way about church life can not give name of church at all nothing personal in ur spiritual or family life they can use the info agianist you.
3-Women should only write to women,men to men ,or they will play u in a romantic-romance way,seen it happen not good at all.
4-no personal information on where you live,home address,work address church address even,no phone numbers as well nothing on family members names-ages-ect. for every ones safety involed.
5-make no promises at all ever.
6-no phone call agreements if they star calling you you accept long distace calls very expensive at least 4-5 $ for 15 minutes ur phone bill gets high fast.
7-feel free to pray ,women are more emotional players to get what they want,with words,men can be to to women,do not go into that trap.
8-get pastoral adive before doing this or work in a prison ministry at least 6 months.for experince.
I work as a Holy Communion Misister at the the County Jail,love it even then i must be spiritually and socially careful i have been asked to mail letter s for imates --not legal i turn them in the letters to Staff Officers.Consider working with a Church Prison Ministy that is thevery best way to serve and help them.
I hope this imformation was helpful,agian get spiritual leadership counsel.