In Postmypost, go to the "Accounts" section and click "Connect."
In the window with the list of social networks, click "Connect" next to Odnoklassniki.
A window will open for the official connection of the Odnoklassniki account to Postmypost, which will specify what data and rights are required by Postmypost. Make sure you agree to provide access and click "Connect."
After a successful connection, you will automatically return to Postmypost, where a list of available accounts and pages for connection will open. Check the box next to the desired ones and click "Connect."