Bundling and unitizing
Batch sorting, or bundling, is necessary for large mailing batches. Items are sorted into postal code order and bundled according to the instructions provided in PTP.
Bundle and prepare
At a printing, mailing or print-out company, a mailing batch and an address file can be sorted with Posti's Sorting Service if an agreement has been made on its use.
Letter items that require signature
Mail letter items that require signature (Registered Letter, Letter with Advice of Delivery, Insured Item and Cash on Delivery letters) separately from other items and so that they can be easily distinguished.