The time investment is enornous, yet the costs of distribution are quite modest. We are happy to donate our efforts to the ham radio community, in return for the countless hours and dollars that others have invested to make it possible to send email via ham radio from anywhere in the world. As cruising sailors ourselves, we are deeply grateful. We also happily donate our efforts to humanitarian and missionary stations, ham radio or otherwise.
Airmail is distributed without charge to users.
Airmail cannot be sold to users, rather it is the station that licenses the use of Airmail by its users. Other commercial use without permission is not permitted. The web-site files may also be copied or transmitted for further distribution, provided that all of the files are copied together and that all copyright notices are preserved. A reasonable charge can be made to cover the cost of distribution. Distribution of individual files is not permitted.