Home > About USPS & News > Forms & Publications > Postal Periodicals and Publications > Publications > Publication 401 - Guide to Manifest Mailing System > 5 Itemized Manifest
5-1.1 Itemized processing produces a manifest of each piece in ascending alpha-numeric order or in ascending order by presort level. Itemized processing is generally used for mixed-class single-piece rate, Standard Mail piece/pound rate, and Package Services mailings.
5-1.2 Single-piece rate mail of different classes and/or processing categories may be listed on the same itemized manifest.
5-1.3 Itemized processing must be used for: