But its prime target was Nintendo, according to a 2020 email leaked during the FTC v Microsoft trial.

I'm in the process of deGoogling and also shoring up my email privacy, which means I'm hyper aware of mistakes I make, hence the stupid question:

I was testing something with Proton Mail and misspelled the domain—swapped the "r" with one of the neighboring letters.

I didn't get an email bounceback, which is fine, because you don't always get a bounceback anyway. But, should I be concerned that I might have just volunteered my email directly to some spam outfit?

The "wrong" domain is registered. I'm acutely aware that the misspelling being one letter away from "Proton" might be intentional to capture misspellings like the one I made. Also, the wrong domain seems to be associated with oopatet.com and trellian.com, which are blocked by ublock.

Is there anything I should do from a privacy perspective?
Or is this a non-issue?

Comedian Rich Hall gave us the sniglet -- defined as (remember?) any word that doesn't appear in the dictionary, but should. Seeking to name the nameless things and behaviors we witness every day . . . .

“I said it smells like merde – s**t. She handed me wet wipes. I started wiping and it was red – blood red. And it kept coming up red. I was like, ‘What the hell is this?’ I just wanted to see what it was. After a while, one of the flight attendants said, ‘You’d better go wash your hands, and here are some gloves.’”

I love how they Uno-Reversoed the passenger into wiping it up.