The present document specifies generally applicable policy and security requirements for Electronic Registered Delivery Services Providers (ERDSP), including the services they provide. The present document is applicable to: - the policy and security requirements of the ERDSP and EU qualified ERDSP; - the general and security requirements of Electronic Registered Delivery Services (ERDS) and EU qualified ERDS in terms of message integrity; protection against loss, theft, damage or any unauthorized alteration of the data transmitted; sender and recipient strong identification; time reference; and proof of data`s sending and receiving. The present document does not specify interconnection requirements.