Michigan inmate mail
Send a letter to an inmate in Michigan
Confirm the Michigan MDOC number and current facility address, then write online. PieterPost prints, addresses, stamps, and mails your copy-friendly letter.
Choose their Michigan facilityMichigan state-prison addresses
Michigan facility-specific address format
Michigan personal mail goes to the prisoner's current MDOC facility, where ordinary incoming mail is photocopied for delivery.
The photocopy policy took effect January 5, 2026. Original ordinary mail and its envelope are retained for 14 calendar days and then shredded.
Address format
Three simple steps
How to send a letter to an inmate in Michigan
Choose the current facility and add the inmate's MDOC number. We help you carry the address into the letter flow.
- 1Choose their current facility
- 2Write and review your message
- 3We print, stamp, and mail it
Current Michigan guidance
Helpful inmate-mail rules
- Letter length
- MDOC publishes no simple statewide limit for every ordinary letter. Check the current facility before sending an unusually long letter.
- Paper format
- Use flat pages and images that remain legible when photocopied. Do not send an original you need returned.
- Envelope and address
- Include the full name, MDOC number, current facility prisoner-mail address, and your full name and return address.
- How it arrives
- MDOC delivers photocopies. Originals and the envelope are held 14 calendar days, then shredded; an original photo may be returned at the prisoner's expense if requested in that window.
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:
- Irreplaceable original letters, drawings, or photographs
- Faint pages, glued layers, loose objects, or material that cannot be photocopied clearly
- Layered, musical, pop-up, padded, scented, or heavily decorated cards
- Mail that disguises the sender or is sent on another person's behalf
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
Michigan facility finder
Find their prison or local jail
Choose the current facility on the map. We will carry the selected address into the letter flow for you to review.
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 a Michigan state prison?
Use OTIS to confirm the prisoner's MDOC number and current facility, then copy its prisoner-mail address. Write online and PieterPost will print your letter, add an envelope and postage, and mail it.
Which Michigan prison mailing address should I use?
Use the prisoner-mail address for the person's current correctional facility. Include the full name and MDOC number, and do not substitute an address found only on a map.
How do I find the MDOC number and current facility?
Search the Michigan Offender Tracking Information System, or OTIS, to confirm the MDOC number and current facility. Check again before mailing after a transfer.
Will a Michigan prisoner receive my original letter?
No. MDOC gives the prisoner photocopies of ordinary incoming mail and approved photographs. Originals and the envelope are retained for 14 calendar days and then shredded.
Does this Michigan guidance cover local and federal facilities?
No. This guidance is for adults in Michigan Department of Corrections state prisons. County jails, federal prisons, juvenile facilities, and other custody settings have different mail systems.