It demonstrates the credibility of the product if the SA Police...

It demonstrates the credibility of the product if the SA Police Dept are having a second look at it. The fact that it is used by US police should carry some weight.
The SA police are not the only ones looking at Secure Email.
Geo if you want to learn more, rather that try to elicit information form posters here, give the Company a call if you have the guts. They obviously know who you are. Despite that, it may prove of benifit for your edification.
Positive moves afoot!