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Canada Post requires mail preparation and presortation in order for a customer to access certain services or to receive specific discount pricing options.

The Mail Preparation and Presortation Guides have been developed to provide customers with a thorough understanding of Canada Post's mail preparation and presortation requirements for the following services and options:

1. High and Low Density Presort (Incentive Lettermail)
2. Letter Carrier Presort (LCP) (Publications Mail and Addressed Admail, including Dimensional Addressed Admail)
3. Machineable Mail (Incentive Lettermail, Publications Mail and Addressed Admail, excluding Dimensional Addressed Admail)
4. NDG Presort (Publications Mail, Catalogue Mail and Addressed Admail, excluding Dimensional Addressed Admail)
5. Unaddressed Admail
6. Book Presort
7. Brick-piling
8. Glossary
9. National Presortation Schematic
10. NDG Presort Online Training