Quick facts

System

Texas Department of Criminal Justice (TDCJ)

Inmate ID

TDCJ Number

General mail goes to

Digital Mail Processing Center (Dallas)

Recipient receives

Color scan on tablet, or B&W printout if no tablet

Timing

Typically available within about 3 business days

Page / photo limits

No letter page-length limit; photos typically max 10 per envelope

Paper

White 8½″ × 11″ only (no colored / cardstock / decorated)

DMPC accepts

Written correspondence, greeting cards, drawings, photos — packages sent there are returned

Where to send mail

General correspondence, greeting cards, photos

Use the inmate’s full commitment name and TDCJ number as shown. The published DMPC template does not require unit of assignment; include the unit when mailing to the facility (legal, signature forms, etc.).

Texas Department of Criminal Justice
[Inmate Full First and Last Name] [TDCJ Number]
PO Box 660400
Dallas, TX 75266-0400

Send to the unit instead

• Legal / special / media correspondence → Inmate’s unit of assignment

  Do not send privileged legal mail to the digital mail center.

• Documents requiring the inmate’s signature → Unit Law Library (c/o Law Library + unit address)

  Envelope should contain only the form and signing instructions.

• Business correspondence from orgs / agencies → Unit of assignment

  Confirm with TDCJ if your use case is “business” vs general mail.

• Books, magazines, packages, subscriptions → Unit (from approved publisher / vendor)

  Not the digital mail center.

Format & content rules

• Paper must be fragrance-free copy or lined stock (ivory/cream shades are not allowed).
• No perfume, stickers, lipstick, powders, glitter, glue, tape, or similar uninspectable substances.
• Photos: typically up to 10 per envelope (excess may be denied).
• Optional: include a self-addressed stamped envelope if you want originals returned after scanning.

Document mailing checklist

1. Look up the person’s TDCJ number and confirm they are in TDCJ custody.
2. Choose the right destination: general packet → digital mail center; legal, signature forms, or business mail → unit.
3. Print on white letter-size paper only.
4. Address and mail using the format for that mail type.

Look up a TDCJ number →

Send with PrisonPDF

• Upload a multi-page PDF or DOCX and we print and mail it for you.
• When you select Texas, we use the TDCJ digital mail center address for general correspondence.
• We do not review PDFs — TDCJ may still reject mail that violates policy.

Official sources

• TDCJ Inmate Digital Mail
• TDCJ Digital Mail FAQ
• TDCJ Correspondence Rules FAQ
• TDCJ homepage