With federal inmate texting, messages are relayed by the federal Corrlinks/TRULINCS components

https://prisonmessages701.capitaljays.com/posts/how-to-pick-the-best-federal-inmate-text-app-for-secure-communication

With federal inmate texting, messages are relayed by the federal Corrlinks/TRULINCS components, and replies can return to the open air user as basic textual content messages.