Looks to be legit, it's a system email notification, but I'm not for sure why it sent you that. - Does it send you that everytime you send an email? - How did you send the email through Pingly that caused that email? (web app, iOS app, inbound SMTP) Thanks for the info!

Ok thanks for that info, I'll keep my eye on that. It shouldn't send those to you, but it does not appear to be phishing / spam. Thanks again!

@noah I am still receiving those emails everyday