Secure Electronic Postal Services (SEPS) were developed according to the Acts of Universal Postal Union, and are part of Macao Post and Telecommunications Bureau (hereinafter CTT) strategy to enhance and diversify its services offering.

    While maintaining physical postal services, CTT developed EPCM, PReM and SEPBox, for the purpose of widening CTT's role as both digital and physical messages carrier. As email becomes more and more popular, CTT not only offers innovative services, but also provides to the public the convenience and security of secure electronic postal services.