Strange Emails Coming from Me

Okay! So I’ve been getting these emails supposedly from my own author email, directed from me to me. Weird emails, clearly spam. I asked my husband to check if he also gets them, as he’s subscribed to my newsletter, but he doesn’t (thank God). My question is, how do I stop them? I am afraid of marking them “spam” and spamming myself by accident. I’ve attached a screenshot of the latest one. What do I do to prevent any more of those? I am attaching a couple of screenshots :(