I tried contacting Daedalic long ago about "Zanzarah The Hidden Portal", the Funatics game they published on Steam, but never got any response. (I actually couldn't get in touch with Funatics either, so maybe I'm just on some kind of blocked email list)

If someone here has had luck, maybe you could send an email to either party about the possibility of Zanzarah coming to GOG. https://www.gog.com/wishlist/games/zanzarah_the_hidden_portal

I have found that tweeting companies has the highest success rate in this day and age. Even if they don't respond, their community manager likely read it at least.

Daedelic is a small company... I can't imagine they're flooded with emails.

I don't know if there are some sort of "people to block" email and twitter lists but lately I've been trying to politely contact various companies but haven't gotten many responses back. I'll try Twitter too though.

You're not always gonna get a response, simply because they might not have anything to say on the matter. Not every game comes to GOG for various reasons, sadly. I've had the best luck with Twitter though, overall. Especially with indie devs.

Yes, but actually reading/writing a properly formatted email with all the relevant information in this day and age is just not cool. Far better to have information delivered in poorly described snippets, emojis etc.

I was able to contact with Daedalic in 2012 when they sent me some steam keys for a giveaway .