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Letter Services

Send important messages easily and reliably – we provide all your letter services from one place from individual letters to large batches.

Become our customer

Posti Pre-Paid Envelope – includes postage

Posti Pre-Paid Envelope is a service providing pre-paid envelopes bearing the sender's information. Posti Pre-Paid Envelope is an easy and convenient way to send letters. The price of Posti Pre-Paid Envelope includes printing according to your company's visual identity, postage, the envelope itself and delivery to the order address.

How to order and send pre-paid envelopes

  1. Log in to Envelope storewith Posti transaction codes. If you don't yet have Posti transaction codes, please become our customer

  2. Select the envelopes in the Envelope Store, provide the printing information and send the order. You will have the pre-paid envelopes at your disposal within 7 weekdays at the latest, often already within a few days.

  3. Put the letters into the envelopes, add the addresses and take the envelopes to a service point or drop them off in a mailbox.

Good to know

The minimum envelope order quantity is 100. As the sealing adhesive on the envelopes may weaken over time, we recommend ordering pre-paid envelopes for up to one year's use. If you only need a small number of envelopes, check out our All-in-One envelopes.

Express Letter – delivered fast

Use Express Letter to deliver your item quickly and reliably.

  • Express letters are delivered to recipients within 1–2 weekdays according to the delivery time inquiry – usually already on the day after mailing.

  • You can easily track the item using the tracking code.

  • Express letters are delivered every weekday.

How to order and send Express letters

  1. As a Posti contract customer, you can easily order Express letters in OmaPosti Pro or the SmartShip. If you don't yet have Posti transaction codes, please become our customer

  2. Print out an address label with express markings from the ordering channel and attach it to the item. Add the phone number of the recipient to ensure fast delivery.

  3. You can leave the item at a Posti service point or a postal center, or you can order a pickup transport service for it. Do not leave the Express letter in a mailbox, as it will then not be delivered on time.

Good to know

Important and tracked items

Registered Letter

A registered letter is a secure way to send an item to a recipient. It is suitable for sending payment cards, decisions and notifications, for example. The service includes an acknowledgment of mailing, item tracking and handing the item over at a Posti service point.

Letter with Advice of Delivery

A letter with advice of delivery is particularly suitable for sending official decisions, debt collection documents and other notifications. The service includes an acknowledgment of mailing and the handover to the recipient, item tracking and handing the item over at a service point.

Insured Item

Insured items have more extensive compensations than other items. You can use the service to send money, valuable items and securities, such as a housing stock certificate, safely to the recipient.

How to order and send important mail

  1. As a Posti contract customer, you can easily order the Registered Letter, Letter with Advice of Delivery and Insured Item services in OmaPosti Pro or the SmartShip. If you don't have Posti transaction codes, please become our customer

  2. You can leave the item at a Posti service point or a postal center, or you can order a pickup transport service for it.

Good to know

  • When you're sending money or valuable items, select Insured Letter. A registered letter and letter with advice of delivery is not suitable for sending money or valuable items.

  • See further instructions

  • See the product terms and prices

Reply Mail Item – for activating customers

Domestic reply mail items are pre-printed envelopes or coupons through which you can offer your customers an easy way to contact your company free of charge.

  • You can use the reply mail item to activate customers to place an order, respond to a questionnaire or give feedback, for example.

  • You will receive returned reply items bundled to the delivery address you have provided. You only pay for returned items and the service's monthly fee.

How to order and send reply mail items

  1. Design the envelope or coupon according to Posti’s instructions.

  2. For reply mail items, you need a reply mail item ID – you will receive it when you are a Posti contract customer. If you don't yet have Posti transaction codes, please become our customer

  3. If you are using reply mail items for the first time, order a Reply Mail ID

  4. You can deliver the pre-printed reply mail item envelope or coupon enclosed in a letter, customer magazine or other material you have sent.

Good to know

  • Take advantage of the info code additional service: Reply mail items can be sorted by location or campaign, for example, and you can see a breakdown by info code on the invoice.

  • Also see the product terms and prices

Large batches of domestic letters

We reliably deliver your large letter batches to consumers and companies. Thanks to our national delivery network, your letters will be delivered across Finland.

  • You get delivery to all households and companies, including Posti P.O. Boxes and business addresses.

  • You can send large batches either as machine-sortable Standard letters or using a Electronic mailing list. Choose the service level that suits your needs: fast Priority or cost-effective Economy.

  • All letters delivered by post include address clarification, and you can rely on your letters being delivered smoothly.

How to order and send large letter batches

  1. As a Posti contract customer, you can easily order letter batches in OmaPosti Pro or the SmartShip. If you don't yet have Posti transaction codes, please become our customer

  2. Send Standard letters and letters sent using a mailing list using the Sorting Service.

  3. You can leave the item at a Posti service point or a postal center, or you can order a pickup transport service for it.

Good to know

Public notification

A public notification provides information about official regulations and public services. It is delivered to all households and companies. The service is meant for use by the state, municipalities and other authorities when communicating about public services that are significant to all citizens.

What can be sent as a public notification?

  • Public notifications include municipal or city notifications, notifications of noise and recycling instructions for waste management.

  • Material containing commercial advertising or direct marketing is not distributed as a public notification. The sender is responsible for the content of notification and for ensuring that it does not contain commercial advertising.

Good to know:

  • Public notifications are delivered twice a month, and the delivery times are published in the Kontakti.

  • An item to be delivered as a public notification must always also bear the following printed text: “Julkinen tiedote” (Public notification) and/or the same text in Swedish “Offentligt meddelande” as well as the sender's information.

  • Public notifications must be mailed as unenclosed items and may not be placed in envelopes.

  • See further instructions

  • See the product terms and prices

Laboratory items

You can reliably send animal and human samples with the Sample Item and Express Sample Reply services.

  • Laboratory samples are transported quickly and safely everywhere in Finland. In the largest cities, we also deliver laboratory items on Saturdays.

  • Sample Item is a suitable service for transports between a hospital and a laboratory, for example, and for situations where several samples are sent in the same packaging.

  • Express Sample Reply is a suitable service for sending individual samples taken by a private person or a veterinarian, for example.

How to send samples

  • As a Posti contract customer, you can send laboratory samples easily through a single service. If you don't yet have Posti transaction codes, please become our customer

  • Mail a laboratory sample by taking it to a full-service Posti Service Point or dropping it off at the contract customer’s pickup and delivery service for transport.

Good to know

  • The samples must be packed in black and yellow-striped packaging in accordance with the Act on the Transport of Dangerous Goods.

  • Read more detailed instructions on sending samples with the.

  • Also see the product terms and prices

International letters

With a letter, you can reach your customers all over the world. A letter is also suitable for invoicing and sending small goods.

  • If you want your letter to be delivered quickly, please choose a Priority Letter. For less urgent items, we recommend the inexpensive Economy letter.

  • Valuable items can be sent abroad as a registered letter or as a letter with advice of delivery.

  • With the Express letter, service you can send documents and small goods abroad with faster delivery.

How to send letters abroad

If you don't yet have Posti transaction codes, please become our customer

Good to know

Additional letter services

  • Saturday Delivery: For an Express letter, you can also select delivery on Saturday.

  • 'Cash on Delivery is intended for Economy and Priority letters: The item is paid by the recipient.

  • Information Service for Economy and Priority letters: Posti’s Information Service carries out an address clarification for items with incorrect address information and delivers the item to the correct address.

  • Handing over to the Addressee in Person: Registered Letter, Letter with Advice of Delivery and Insured Item.

Payment channels for letters