Well, it's your decision. By the way, if you ping me on Twitter (yanex_ru), I can send you the direct link to DMG via a DM.
Just if it was not clear: my email is public on many services. I just think that if you require my email to get the installer, how much logging/tracking code will you run once you're on my machine?
I know it's all about trust, but Marta doesn't have any tracking code, and never will. Trust is much more important that any statistics.
https://github.com/caskroom/homebrew-cask
EDIT: details on how to add your own Cask for an app:
https://github.com/caskroom/homebrew-cask/blob/master/doc/de...