Inmate Mail

Persons confined at the Napa County Department of Corrections Jail are permitted to send and receive unlimited letters to maintain communication with family, friends, and their legal representatives.  If there is good cause, mail will be opened and checked. Mail regarding the courts and attorneys is considered confidential, and will only be checked in the presence of the inmate.   

Mail is received and processed at the jail five days a week, Monday through Friday, except holidays. Incoming mail shall be addressed on a plain envelope as follows, or it will be rejected by the jail: 


Inmate Full Name and PID Number
c/o Napa County Department of Corrections
1125 Third Street
Napa, CA 94559


Full Name
Full Address

All magazines, newspapers, periodicals, books (paperback only) must come directly from the publisher or bookstore, or a verifiable and reputable internet/mail order company. Hard plastic/metal items, including the binding is prohibited. Note: Hardbound books will be assessed on a case-by-case basis. Any reading material that would disrupt the safety and security of the facility, including weapons manufacturing, explosives, drugs, escape, or violence toward staff and other inmates and any sexually explicit material that depicts nudity or partial nudity are prohibited and/or anything considered illegal activity. Note: Book size is limited to 8.5” x 11”. 

Only mail that is on lined paper, plain paper, or postcards (which are not cardstock thickness) may be accepted. The following is prohibited:

  • Bulk mail, blank paper, blank envelopes or stamps
  • Envelopes that are stained, overly dirty, or have any foreign substances
  • More than 10 photographs (no polaroids or photos larger than 5” x 7”)
  • Envelopes/letters containing kiss impressions, perfume, powders, glitter, stickers, etc.
  • Envelopes/letters containing white out, white out tape, crayons, markers, glue, tape, labels, etc.
  • Greeting cards larger than 5” x 7”, or containing sound-making devices
  • Anything gang related or hate oriented material 
  • Correspondence from inmates/prisoners from any institution 
  • Nude or partially nude drawings or photos, or material that encourages sexual behavior 
  • Any metal or plastic (excluding “Light duty, small wire fastener staples used to attach a few sheets of paper”), string, cord, ribbon, etc.
  • Information regarding law enforcement, military or jail procedures or operations 
  • Any gum, candy or food items 
  • Cash, checks, or money orders
  • Any other material deemed inappropriate

All mail determined to be contraband will be returned marked “Return to Sender" with an explanation for the return. Any Publisher whose material is sent to a named inmate and is rejected for delivery shall be provided written notice of an administrative appeal process. The written notice will be sent within 15 days of the decision to reject the material and include the administrative process to appeal the decision.