 In addition to regular identification of a person, an ID-card can also be used for establishing one's identity in electronic environment and for giving one's digital signature.With the Estonian ID-card the citizen will receive a personal @eesti.ee e-mail address, which is used by the state to send important information.In order to use the @eesti.ee e-mail address, the citizen has to forward it to his or her personal e-mail address, using the State Portal eesti.ee.