CTT is the national postal authority of Portgual. Typical for European countries, it accepts payments for utility and municipal services from citizens, as well as providing payment and collection services to municipalities on a business level.

Operating across the country, CTT faced a necessity of unifying billing processes for multiple local authorities. Introduction of the MaxBill solution allowed CTT to provide its subsidiaries with a standardized billing tool while preserving the required level of autonomy for each of them.