ECO letters for business clients

Use our ECO letter service to send your business mail such as quotes, invoices, payment reminders, documents, contracts and small merchandise - it's inexpensive and reliable. Your items will reach their recipient 2 to 3 business days after posting.

Posting locations

ECO letters can be posted at any of the more than 1,750 Austrian Post service locations. ECO letters can also be posted in one of our 14,000 letterboxes.
If you post larger quantities (approx. 2,500 items and up) directly at our large-volume branches and distribution centres, you will benefit from particularly fast processing and any available discounts.
For particularly important ECO items, you can use simple registered mail or registered mail as well as other additional services such as delivery to addressee only, advice of receipt, do not deliver to persons authorised to receive mail, etc.

For franking your ECO letters, you have the following options:

Postage paid indicium

Recommended for larger volumes. Please enter your customer details, number and weight of items in the ECO letter posting list or use our software. When posting items with a postage paid indicium, a minimum volume of 20 items per format applies. 

Postage paid by franking machine

Post your ECO letters franked with a franking machine at any Austrian Post counter or in any Austrian Post letterbox.

  • Stamps: they are sure to get the recipient's attention and add a special note to your item

How to find the right rate (letter S, letter M, packet S, packet M) for your letter-mail item:

  • Item weight
  • Format (just use our sizing template to determine the right format)
  • Machine processability yes/no – for non-machine processable items, we will charge the next higher rate

For more information on the machine-processability of your letter mail item, please see our brochure "Addressing: getting it right" or simply have your item layout checked in advance by your customer advisor, our service point 0800 212 212 or online.

Go to GTC

All relevant information is available under "GTC domestic letter mail" and "product and rate overview - domestic ECO letter mail items".

ECO letter posting list (available in German only)


ECO letter posting list with preparatory services (available in German only)


Product information, additional letter mail services (available in German only)


Correct addressing with foldout (available in German only)


List of logistics centres and opening hours (available in German only)