We have a letter service that does just that. Our offices are in Florida so the mail gets there in one day
https://www.inmateaid.com/ask-the-inmate/hey-i-would-like-to-write-to-someone-in-the-homestead-florida-corrections-but-i-rsquo-m-in-the-uk-how-do-i-do-this-is-there-a-way-i-can-do-it-online-instead-of-writing#answer
Accepted Answer Date Created: January 27,2023