SpamDuster On-Premise Inbound filters the mail you receive, in front of your mail servers, on your own server or in your own cloud account. Includes 5 mail server licences, with unlimited domains and mailboxes on every licensed mail server that runs a supported hosting control panel. Add more mail server licences or domain packs (for domains you add by hand or through the billing API). Billed monthly or yearly; added licences and packs follow the same billing cycle.

Domain packs for SpamDuster On-Premise Inbound, for domains you add by hand or through the billing API, without a hosting control panel. Includes one pack of 25 domains and 250 email addresses; add more packs of any size. Billed monthly or yearly; added packs follow the same billing cycle.