Patent ID: 7290143

Claim:
A method of certifying transmission, reception and authenticity of electronic documents between at least one sender user and at least one addressee user in a telecommunication network, the method comprising: wherein the sender user carries out the following steps: drafting the document to be sent, sending a message comprising the drafted document to a mailbox associated with the addressee user through the telecommunication network, wherein the addressee user carries out the following step: downloading the message from the mailbox associated with the addressee user, and the method further comprising: receiving the message from the sender user at a certification entity, identifying by the certification entity the sender user from whom the message is received, checking at the certification entity if the sender user is a certified sender user included among sender and addressee users comprised in at least one file unit so as to admit or refuse the message, wherein a transmittal certificate is automatically generated and sent to a mailbox associated to the sender user by a certification entity connected to the telecommunication network when the message reaches the mailbox of the addressee user, if the identified sender user is included among the sender and addressee users in the file unit of the certification entity, and providing by the addressee user to the sender user one of a manual and automatic transmission of a certificate of having read the message, when the addressee user opens the message.