They most probably not forward the mail. Please send us the information regarding their new location and we will make the changes on the website and resend the letter for you at no charge. Please email us at aid@inmateaid.com
https://www.inmateaid.com/ask-the-inmate/my-inmate-got-transferred-before-his-mail-got-there-will-they-forward-the-letter#answer
Accepted Answer Date Created: July 06,2016