Through a personal account or on the website of the Russian Post
By registering on the Russian Post website and downloading the online application, you can receive a notification of your parcels online and immediately pay by the link from the letter or in the mobile application without commission. It does not matter when you do this - as soon as you receive a notification, or in a few days.
You can pay the fee at the office upon receipt. But for this you will need to pay an additional fee, as well as present either the Tax ID, if you are a citizen of the Russian Federation, or a passport of a foreign citizen.