I am looking for a way to securely share my plugin with a potential tester without incurring a charge. I was wondering if it is possible to create a one-time 100% discount coupon that would allow them to download and test the plugin. Alternatively, if there is another secure method Adobe recommends for sharing plugins with testers, I would appreciate your guidance. Thank you!
You can share a .ccx file by any means - email, http, ftp, USB, DVD, Floppy Disk.
If the “securely” refers to any copy protection, you better implement your own anyway.