[Unit] Description=Proton Mail IMAP/SMTP bridge Documentation=https://proton.me/mail/bridge/ [Service] ExecStart=/usr/bin/protonmail-bridge --noninteractive Restart=on-failure # Hardening ProtectSystem=full PrivateTmp=true SystemCallArchitectures=native MemoryDenyWriteExecute=true NoNewPrivileges=true [Install] WantedBy=default.target