Books that are at least 8 pages. Sound recordings and video recordings, in the form of CDs and DVDs. Play scripts and manuscripts for books, periodicals, and music. Printed music (sheet music). Computer-readable media such as CDs containing prerecorded information and guides, or scripts prepared solely for use with such media. This does not include video games Sixteen millimeter or narrower width films. Printed objective test materials and their accessories. Printed educational reference charts. Loose-leaf pages and their binders of medical information for doctors, hospitals, medical schools, and medical students.

Bills and invoices. A brief personal note that introduces the media. Instructions for the media’s use. Corrections to printed information in the media.

Envelopes and boxes can also be purchased at most USPS locations.

You can also use newspaper to cushion items in boxes. Just make sure you test the box by shaking it gently to see if there’s enough cushioning. There should be no items rattling around in the box.

The return address goes in the upper left corner of the envelope or top of the box. The recipient address goes in the middle. In the upper right corner of the envelope or top of the box, you’ll need to place a postage stamp. USPS’s website has a tool for calculating and purchasing the correct postage.

Media Mail shipping starts at $2. 72 and goes up $0. 50 for each pound over one, up to 37. 22 for a 70 pound package.

Certified mailing means that you will receive evidence that you mailed what you did when you did it. Media Mail includes USPS tracking, so that you can know when the estimated delivery date and time will be. The cost of insuring your mail depends on the value of the item or items inside, and it can be insured up to $5000.