GUIDES
Guides: prison mail
Official sources
- BOP · Inmate communications: mail rules
What a federal facility accepts in the mail and what it rejects.
- BOP · Program Statement 5265.14, Correspondence (PDF)
The full federal correspondence policy.
- BOP · Inmate Locator
Find a person's register number and facility by name.
- BOP · MDC Brooklyn
The facility page, with its own mailing address and rules.
- BOP · MDC Brooklyn handbook (PDF)
The facility's own handbook, including mail.
- USPS · First-Class Mail
How the letters travel.
Guides and case status
- Where is Nicolás Maduro being held? Charges, court dates and case timeline
Nicolás Maduro has been held at MDC Brooklyn since January 2026. The charges, the next court dates and the full case timeline, with sources.
- Where is Cilia Flores being held? House-arrest request, health and court dates
Cilia Flores remains in custody at MDC Brooklyn. What her lawyers asked for, why prosecutors oppose it, the health claims, and when the judge decides. With sources and a timeline.
- What is MDC Brooklyn, and how does its mail work
MDC Brooklyn is a federal pre-trial detention center. What it is, who is held there, how mail gets in, and what gets rejected.
- How to send a letter to a federal inmate in the U.S.
Address, paper, review, postage and realistic delivery expectations.
The mail rules we follow for every letter are written out in full. Read the mail rules →







