The Multihost service allows us to manage newsletter sendings independently from the regular email service. To access the sending management and purchase new sendings, go to the cdmon Control Panel and click the "Multihost" button on the top bar.
Now, click the "Newsletter sendings" button:
From this section we can manage the sendings of the "newsletter" users created in the Multihost hostings, purchase new message packages and distribute the quantity among our hostings: