<br> <br>If users decide to pay for the Air service via intermediary companies (e.g. PayPal) which process payments, any data the users give to such companies are not under Air control and are not stored or treated by Air, but by the payment processors companies. Air does not store Instant Payment Notifications, therefore if a payment processor sends an Instant Payment Notification which includes personal data of the customer this will not affect the privacy of that customer in Air system.<br> <br>Users do not need to enter any personal data to access Air services. Users may optionally provide their e-mail addresses to receive courtesy e-mail pertaining to technical support. When they do so, e-mail addresses are stored in Air servers exclusively for assistance purposes.