“You are receiving this email because this is an important message regarding your account and products you are using. You are not allowed to unsubscribe from this type of message.”
Edit: To all the concern trolls who think the contents of the email is important context as to whether I’m allowed to be annoyed or not, understand that I am not Atlassian’s customer. We have zero active licenses for any Atlassian products.
I find the most annoying that gmail will ignore spam tagging of well known emails such as Facebook, Amazon etc and will continue to feed you their crap regardless of your choice.