Are email newsletters still being read?

When checking things off my launch list, I got to the email marketing part, where I started to think about building an onboarding email sequence and maybe job search tips (the product we're launching soon is a job search agent).

However, my co-founder said that it probably doesn't even matter because people don't read newsletters anyway. Probably now even less than before because content can be easily generated, and thus, losing its value.

Do you have newsletters that you do not just open but actually read, and what are they about?

If you've built a product recently, do you see any significant positive impact on user engagement?

Personally, I must confess that most of the email marketing I find rather annoying. I think I am only checking emails from my favorite fashion brands for the outfit inspiration :D