Inmates do not have access to the the Internet. Most inmates do not have access to email unless they are in the federal system. The federal system or BOP (Bureau of Prisons) have a closed system called Corrlinks. It is a good system that works on a long delay between emails and is expensive.
There are some state prison systems that are beginning to follow the lead of the feds, you will have to check on a case-by-case basis to find out if they do. The ones that do require that the inmate buy a device to receive the emails and then are charged for the service.
But, all inmates are able to receive letters through the US Mail. Mail call is done Monday
through Friday only.
https://www.inmateaid.com/ask-the-inmate/do-inmates-have-access-to-email#answer
Accepted Answer Date Created: January 17,2015