The Web Encryption Extension
You can use the two demonstration keys in the demo with the passphrases "secret" or "kerrylinux" to decrypt messages.
Secure Contact Forms For Your Website
Any contact form can be turned into a safe channel with the web encryption extension. See a demonstration here .
Your Own Secure Online Bills and Customer Panel
Of course, you want to check the control panel and see for yourself how you can write bills for your customers before you sign up for your own service.
With this online demonstration you can explore the online billing service from both sides, as your own customer and as the one in charge of the system. The demo password is "securebills".