The Ministry of Justice was the first state administration entity that started using this service. Its spokesman, Mgr. Vladimír Řepka said about this service:
The widespread introduction of conversion mail to all the ministry’s organisational units, which the Ministry of Justice is planning to do soon, will bring huge savings in manual work in courts, prosecutors' offices and other judicial institutions, which is now associated with the preparation and sending of mail.
The principle of operation of the Conversion Mail consists in converting the original document into electronic form, sending it via an API interface from the court's information system to the server of the Czech Post. This is followed by printing on paper with security features, attaching the conversion clause, sealing the envelope, assembling the parcel and forwarding the parcel for postal transport on behalf of the court or other organisational unit. As the documents to be delivered will be mainly witness summons, notices to parties, court decisions, etc., the Ministry and courts place great emphasis on reliability, timeliness, proper registration and protection of personal data or confidentiality of letters.