When registering for stuff I always pay very close attention to not check the “send me offers and promotions” checkbox, unless I am genuinely interested.
If any gets by, or if any by default signs you up, whenever I get an email from them I’ll go to the bottom of the email and unsubscribe.
This means that all the marketing emails are from things that I genuinely have interest on. Sometimes, even these things get too spammy and unsubscribe from those that kinda act abusive. They aren’t your “FREE LIMITED IPHONES! OPEN NOW!” kind of emails. Those I mark as spam, hoping to improve the detection system on whatever email client, and move on.
So, essentially, I have “free time” to read those as much as you and I have “free time” to come here on lemmy. It’s something I am interested on.
Edit: just realised I didn’t specifically answer your questions but it’s basically:
Just a regular guy.
I am interested in the ones I do get.
Sometimes before sleep or when I go to the bathroom I look at emails/lemmy/others.
Edit2: I think there’s a distinction to make here between SPAM emails and Newsletters. SPAM emails are mostly sent based on leaked emails lists or something. Newsletters, you usually sign up for them (knowingly or not).
Edit3: Bonus ProTip - If you use Gmail you can get a + sign after your email and before the @ symbol and whatever your write on there is ignored. So for instance [email protected] will still forward to [email protected] . This means you can kind of find out who leaked your email if you register as “[email protected]”, however this tip is getting known a bit more so some websites now sanitize your email and it won’t work as intended… :(
Also, if for some reason you’ll be using the email as the login it can be kinda crap.