How can I stop receiving these emails I receive for some months now with "you left these games in your cart"?
I don't want to unsubscribe from emails in general, just this specific type. I find it annoying. I know I have items in my cart. Stop telling me that.

They are entirely pointless. I don't know how other people use the cart, but I use it to remember things that I might buy soon in comparison to the wishlist which I use for things that might interest me later.

These nag emails actually make me not add things to the cart – so I buy less games. Well done, GOG.

Create a rule for those emails so that when the header or text contains this sentence, they get deleted automatically. Otherwise there is no way to opt out of this specific type of reminder.

Well, why don't you simply remove these items from your cart?
Or would you consider doing that as too simple a solution for your little problem?

If you fear to forget, that you have some interest in them, put them on your wishlist, instead.
Your cart even offers that solution via a simple mouse click: "Move to wishlist".
Done.

And if your reaction to that 100% logical proposal is "but I don't want to remove these items from my cart - I just want GOG to stop reminding me of these items!!1!", then your little problem is a handmade one - by yourself, not by GOG.

Edit: oh, I just discovered your real problem - a wishlist with 1468 entries...

I've emailed support to opt out of them. They said they did. I still get the bullshit. GOG loves to spam worthless emails nowadays (often with shitty titles and total lack of information -- like you usually have no idea what a supposed discount code even applies to unless you were to click on it). "Will the bad takes ever cease?" he rhetorically asked the cosmos.

They probably want you to click the link that goes through the tracker before it redirects you to the real page.

It's a shame that most additions in the last years feel like they do not respect their customers.

Same situation, - I hate such useless mails that I cannot disable. If I want to receive reminders about what is in my cart I will enable such an option. But gog went forward and added such a function but did not ask Me if I wanted it enabled from the start. Such a disgusting behavior of gog company, that I dislike more and more for all the bullshit gog does.

Exactly. Wow, you must be the soul of a party.
Stop replying to me. I don't want your "help". Pretty much. It doesn't help, it just annoys me.