To send an end-to-end encrypted message to a recipient, you need to obtain their OpenPGP public key and mark it as accepted.
Akken ad tazneḍ izen awgelhen seg yixef ɣer yixef i uɣerwaḍ, teḥwaǧeḍ ad d-tawiḍ tisura-nsen tizuyaz n OpenPGP syen creḍ fell-asent ttwaqeblent.