On one hand, people leave bogus emails just to get the download link. You don't get any means of contacting them afterwards or build your email list.
On the other hand, if people see that sending an email to get a trial version, they might not even bother at all.
Which is an optimal choice? I am a bit worried because I am seeing downloads but very little contact or purchases.
When I used to run a service website, I was used to getting a lead for work at least everyday in my inbox.
Now I am running a software for purchase website, I am seeing notification for downloads, but otherwise silence. This is kind of irritating because I don't know what needs to be optimized, my software, the price, the website? How long does it take for someone to get to using the full paid version?
I can see the latter is also quite expensive. At the rate it's going, it will cost more to acquire a paying customer for a software than a paying customer for a programming job.