I’m willing to bet that you, as a marketer, you have experience with email marketing and SEO. If you’re a beginner, you’ve at least heard of both strategies and maybe done a bit of research into them.
Here’s a little exercise for you: check the timestamps on the emails you’ve received in the past day. I noticed that most of my emails, especially my subscription emails, were sent between 9 AM - 12 PM or 12-3PM.
This isn't a coincidence, either.