Alabama inmate mail
Send a letter to an inmate in Alabama
Write your Alabama letter online using the recipient's full record name and AIS number. PieterPost formats, prints, adds the envelope and postage, and mails it to ALDOC's San Antonio processing center.
Write my Alabama inmate letterAlabama state-prison addresses
Use the Alabama personal-mail processing address
Since October 27, 2025, ordinary ALDOC personal mail goes to the San Antonio processing center for scanning. Use the person's full record name and AIS number, and do not send this mail to the prison.
This address is for ordinary personal correspondence. Legal mail, money, publications, packages, and documents needing an original use other procedures.
ALDOC Inmate Mail Processing
ALDOC Inmate Mail ProcessingInmate full name – AIS numberP.O. Box 17339San Antonio, TX 78217Three simple steps
How to send a letter to an inmate in Alabama
Add the inmate's name and AIS number. We already know the official statewide personal-mail address.
- 1Enter their name and AIS number
- 2Write and review your message
- 3We print, stamp, and mail it
Current Alabama guidance
Helpful inmate-mail rules
- Letter length
- ALDOC publishes no fixed statewide page cap for ordinary letters; check before sending an unusually long letter
- Paper format
- Use plain, flat pages with clear, high-contrast writing that can be scanned
- Envelope and address
- Include the full record name, AIS number, sender name, and return address; mail it to San Antonio, not the prison
- How it arrives
- The processing center scans personal mail for electronic delivery; the physical original is not delivered
Items that need another approved route
PieterPost is for ordinary written letters. To help avoid a mailroom rejection, do not add these items to the envelope:
- Cash, checks, stamps, gift cards, or other valuables
- Polaroids, irreplaceable photographs, or original identity documents
- Layered, musical, pop-up, glittered, or oversized cards
- Tape, staples, glue, stickers, loose objects, or scented material
PieterPost takes care of the rest
You only need to write your message
No printer, paper, envelope, stamp, or trip to the post office. We prepare and mail the physical letter for you.
- Write your letter online from any device
- Check the finished letter before paying
- We format and print it for the facility
- We address, stamp, and mail the envelope
Alabama local jail directory
Looking for a county or city jail?
This guide covers people in Alabama Department of Corrections custody. County and city jails use their own addresses, which you can find on the map.
Is the person in federal prison?
Search the Bureau of Prisons inmate locator and continue with the federal letter flow.
Common questions
How do I send a letter to someone in Alabama state prison?
Confirm the person's AIS number, then write your message online. PieterPost formats and prints the letter, adds the envelope and postage, and mails it to ALDOC Inmate Mail Processing. ALDOC acceptance still depends on its current mail rules.
Which address should I use for Alabama inmate mail?
Ordinary personal mail goes to ALDOC Inmate Mail Processing, followed by the recipient's full name and AIS number, at P.O. Box 17339, San Antonio, TX 78217. Do not replace it with the prison's street address.
How do I find the recipient's AIS number and facility?
Use the official ALDOC inmate search to check both the current location and the AIS number. The AIS number is the agency-specific identifier that belongs in the address.
How long can the letter be, and will the original arrive?
No fixed statewide page cap is published for an ordinary letter. Keep pages plain, flat, compact, and easy to scan, and check ALDOC's latest notice before sending an unusually long letter. The recipient receives electronic scans, not your physical original.
Does this guide apply to Alabama jails or federal prisons?
No. This guide is for adults in Alabama Department of Corrections state prisons. County or city jails, federal prisons, juvenile facilities, and other custody systems can use different addresses and rules.