Mail rules for BOP (FCI or USP or FMC)

Here are the rules for most BOP

•White paper
•White envelope
•No sticker inside or outside
•Write only on one side of paper – handwritten or typed
•No card allowed but you may scan and print your card on one side of paper.
•Max 5 pages/sheets
•Return address must be handwritten or typed. 
If no return address may not be delivered.

This should work for all facilities

Expect mail to take time to be delivered between a few days to a couple of weeks.

The inmate will receive a copy of your envelop and your mail in black and white.

Some more info about prisons and jails

Glossary
BOP- Bureau of Prisons
FCI – Federal Correctional Institution
FDC – Federal Detention Facility
USP – United State Penitentiary

The bureau of prison is federal.

Local county jails/city jails are not under the BOP supervision. Their mail rules will be different. 
The DC Gulag has different rules. They can receive cards there.