We appreciate any work. Especially the work you have done in developing all the amazing things using the Kerio API.
Because we believe that you won't keep this work just for yourself and want to distribute it among your colleagues and partners, everything is provided under a simple SDK license.
In short, if you would like to write scripts for any profit or for free, there is only the requirement to be met - to accept the SDK license agreement in order to use the Kerio APIs Client Library for PHP or any other resource obtained from Kerio Developer Zone or Kerio Forums.
See SDK End User License Agreement.
We are here to help you during your API development. Getting involved is a simple and quick process which allows you to meet fellow experts, gain and share knowledge with Kerio and other members in our forums via the Kerio Betatesting program.
See Developer Zone Portal Terms of Use and Contribution.