LetterAgent

Mail physical letters by just asking your AI assistant.


Status: LetterAgent is currently in private testing ahead of public launch. Everything on this page describes the service as it works today.

Home > Guides > Faxing an inmate

Can you fax an inmate?

Generally, no. Jails and prisons do not accept inbound faxes for inmates, and a fax sent to the facility's office will be discarded or ignored. Use the facility's mail rules instead: send the letter through the mailroom with the inmate's full name and ID number, or use the facility's approved electronic messaging service where one exists.

What happens when you fax a jail or prison?

The fax line at a correctional facility is an office line. It receives court orders, medical records, vendor invoices, and other administrative traffic. Nothing about an inbound fax routes it to a housing unit, and nothing puts it into a specific person's hands. Staff are not going to print your pages and hand-deliver them to a cell. Most facilities say this plainly in their mail policies: faxes are not accepted for inmates. Unsolicited pages get discarded, and there is no "inmate fax number" to look up, because no such thing exists.

The same honest no applies here: LetterAgent sends faxes to US and Canadian fax numbers, but a facility's office fax is not a path to an inmate, so this is not something faxing can solve. The working path is postal mail, which is exactly what the mailroom is built to handle.

How does mail actually reach an inmate?

MethodHow it worksWhat to know
Facility mailroomA physical letter addressed to the facility, with the inmate's full legal name, ID or booking number, and housing unitFollow the facility's exact addressing format; wrongly addressed mail gets returned or discarded
Legal mailCorrespondence from an attorney, marked as legal mailOpened only in the inmate's presence at most facilities; never send personal mail this way
Electronic messagingTablet-based messaging systems some facilities provideUsually costs a small fee per message, and messages are monitored
Scanned mail programsPaper mail routed to an offsite vendor that scans it; the inmate reads it on a screenOriginals may be destroyed or stored; a growing number of county jails now work this way

Should you check the facility's rules first?

Yes, and expect them to be specific. State prisons, county jails, and federal facilities each publish their own mail policies, and the details change. The addressing format is the part people get wrong most often: full legal name (not a nickname), the booking or ID number, the housing unit, and the facility's mailing address, in the order the facility asks for. Photos are often limited by size and count, and extras like glitter, stickers, or musical cards are commonly rejected as contraband risks. A letter that breaks the format usually comes back to you, or quietly disappears.

A physical letter sent through LetterAgent follows the same mailroom rules as a letter you stamp yourself: address it exactly the way the facility requires, and it moves through the same screening. Describe the letter to your AI assistant, approve the exact quoted price, and it is printed and mailed. When in doubt, call the facility's mailroom before you send anything; they answer this question every day.

Related guides

Ready to fax it? Fax with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is sent.


LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.

Need help? Ask your assistant: it can check a job's status any time. If it ever can't handle something: hello@getletteragent.com

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