He will most likely not get the mail, most institutions will not forward the mail to transferred inmates. If you send us an email to aid@inmateaid.com with the new location, we will make the change in the inmate profile and resend the letter for you at no charge.
https://www.inmateaid.com/ask-the-inmate/i-sent-an-inmate-mail-when-he-was-in-county-jail-they-moved-him-to-state-prison-and-never-received-my-mail-do-they-send-them-back-to-me-or-do-they-throw-it-away-also-this-inmate-just-has-a-week-in-state-prison-is-he-able-to-get-e-letter#answer
Accepted Answer Date Created: September 25,2015