Instructions for mailer companies

On this page, you can find mailing instructions and tools for mailing large or regular publication, letter and direct advertisement batches.

Latest instructions

Mailer companies’ tools

All of the ordering channels are logged into using the same user codes. User codes can be obtained from your company’s administrator. If your company does not yet have an administrator, order transaction codes. Order credentials

Instructions Posti Pro

Magazine Pro and Economy Publication

Daytime Publication Delivery and Long-Distance Publication Delivery

Ordering instructions (pdf) are only available in Finnish.

Customer Direct

Ordering instructions (pdf) are only available in Finnish.

Batch sorting and bundling

Batch sorting, or bundling, and unitizing are necessary for large mailing batches. Publications are normally always mailed in bundles. The Guide for Batch-Sorted Postal Items (Addressing, Bundling and Unitizing) is aimed at large-volume senders as well as printing and mailing companies to help them prepare mailing batches for mailing.

Correctly bundled mailing batches speed up sorting and a properly tied bundle that can withstand machine-sorting ensures that your item will arrive neat and intact. The recipient receives your item in the same condition as it was sent.

Postal items are sorted by postal code and bundled according to the instructions provided in the Guide for Batch-Sorted Postal Items (Addressing, Bundling and Unitizing).

An additional handling fee may be charged for non-compliance with the instructions.

Below, we have gathered instructions on key matters related to batch sorting. If you use the Sorting Service, you will automatically receive the correct information.

  • Bundling order A bundle is created when items addressed to a certain postal code, transport direction, delivery office, postal code area or sorting center form a bundle of a minimum of 2 centimeters.

  • Bundle label Bundle labels must include delivery service and and control information.

  • Control information for items Bundles can also be dropped off without bundle labels if the items have address and control information markings.

  • Transport units and unitizing levels Transport units should be packed in a way that ensures that the items will remain undamaged from the sender to the recipient.

The unitizing levels can be found in the Guide for Batch-Sorted Postal Items. You can use the RCC2 control label application to print transport unit container labels with bar codes. In unclear situations, please contact our customer support.

Sorting Service

The Sorting Service is a tool that can be integrated into the mailer company’s sorting system, providing automated and batch-specific support for preparatory work in mailing. The delivery of items to their destination can be ensured, mailing quality defects are reduced and the delivery chain becomes transparent. The Sorting Service produces 2D codes and 4-state codes that are used on letter, publication and direct marketing items.

The Sorting Service is free of charge, both for the customer and the mailer company. It is suitable for the mailing of letters, publications and direct marketing items. When preparing the items, bear in mind the service-specific requirements of mechanical handling and the placement requirements of 2D codes, 4-state codes and address information. In addition, the paper grade influences magazines’ and direct marketing items’ suitability for mechanical handling. Check the instructions on this page.

  • The Sorting Service is used to produce the contents of codes.

  • The Sorting Service provides clear and up-to-date mailing instructions.

  • The Sorting Service creates the bundle and unit labels automatically and writes the electronic mailing list.

Benefits of the Sorting Service for the customer

  • The quality of mailing improves and the items are delivered to their destination reliably.

  • Using the Sorting Service, items will be delivered faster.

  • Errors become less likely to occur, because the Sorting Service guides the mailing process.

  • The Sorting Service checks the accuracy of the address. The item finds its way to the correct post town even if it has a wrong postal code.

Benefits of the Sorting Service for the mailer company

  • The Sorting Service provides clear and up-to-date mailing instructions.

  • The Sorting Service creates the bundle and unit labels automatically and writes the electronic mailing list.

  • The contents of codes are created with the Sorting Service to the mailer/printing house that prints the code on the items.

Machine processing

When preparing the items, find out and bear in mind the service-specific requirements of Posti’s mechanical handling, such as measure and weight limits and the placement requirements of 2D codes, 4-state codes and address information. Machine-sortable items move quickly through the various stages of processing and are delivered to the recipient on schedule and in the correct form.

Price benefit for machine-sortable items

When you are planning an item—for example, the appearance of an envelope—please take into account Posti’s service-specific requirements for mechanical handling. These requirements are listed in the Guide for Batch-Sorted Postal Items.

Machine-sortable items move quickly through the various stages of processing and are delivered to the recipient on schedule and in the correct form. Furthermore, you can save on postage fees: Your letters are delivered affordably as Standard Letters and your advertisements cost-effectively as Customer Directs.

The paper grade influences magazines’ and direct marketing items’ suitability for mechanical handling. The list below will be updated as new information is received.

  1. Cover paper, unenclosed items

The cover paper must be able to withstand machine sorting. Paper under 50 g/m² is too thin and weak and requires separate, thicker cover paper. - Suitable: Finesse Gloss PEFC 130 g, which has proven to be durable; Finesse Gloss 115 g; and Silk

  1. Cards and other two-page enclosed items

Suitable: G-Print and Gloss Not suitable: Silk

What kinds of items can be sent as machine-sortable items?

Envelopes and postcards

  • Envelopes sealed on all four sides that may contain content such as credit cards and membership cards

  • A5 and A4 sized postcards without envelopes

  • Self-mailers

  • Rectangular items, we recommend that you use standard envelope sizes (C6, C5, C4).

  • Items wrapped in plastic

Magazines and catalogs

  • Multi-page brochures

  • The items may contain various kinds of cards (e.g. credit cards and membership cards).

  • The item must be rectangular in shape.

  • Items without plastic covering

Magazines

  • Tabloid publications (machine-folded, always tested separately)

  • Catalogs

  • Multi-page brochures

What kinds of items cannot be sent as machine-sortable items?

Machine-sortable items may not contain hard or inflexible objects such as paper clips, keys, coins, compact discs, pens, hard-shelled samples of cosmetics, etc. These types of items must be sorted manually.

Shaped cards and other irregularly shaped items as well as landscape-oriented publications and catalogues are always manually sorted. The item must be manually sorted also when the measurements, form or flexibility of the item differ from the product features defined for machine-sortable products.

The publication printed on newspaper's suitability for mechanical handling is investigated

In Posti’s machine sorting, the machine sorting of publications printed on newspaper is tested. When specifications are found for factors such as paper grade, paper thickness and other factors affecting suitability for mechanical handling, a machine sorting process can be implemented.

Switching to machine sorting affects the placement of a publication’s address markings. The address and code must be printed on the BACK PAGE of the publication, either horizontally on the right-hand side of the top edge or vertically in the right-hand margin so that the address can be read looking from the inside edge.

  • Instead of the current instructions*, the address can already be printed on the BACK PAGE of the publication vertically or horizontally on the right-hand side of the top edge, but the reverse folding of the publication must be taken into account. If the publication is also folded into quarters, it must be ensured that the address marking is placed on the outside of the publication in the same place as it would be on an unfolded publication.

Payment indications of letters, publications and direct advertisements

Items indicated on a mailing list must include a payment indication according to Posti’s instructions. Use of the indications is subject to a valid contract with Posti.

Download the payment indication files using the links below. We also recommend reading the user instructions for payment indications. The postal company in accordance with the Postal Act will be Posti Jakelu Ltd from January 1, 2023. However, Posti Ltd's payment indications will not expire and they can still be produced with a franking machine. There will be no time limit for using printed envelopes.

Questions and answers about the Sorting Service