Suspicious email

I keep getting this email (about 10 times a day) and want to find out if it is legitimate.

Delivery incomplete

There was a temporary problem delivering your message toapplebill045@gmail.com. Gmail will retry for 23 more hours. You'll be notified if the delivery fails permanently.LEARN MORE

The response was:

The user you are trying to contact is receiving mail at a rate that prevents additional messages from being delivered. Please resend your message at a later time. If the user is able to receive mail at that time, your message will be delivered. For more information, please visit https://support.google.com/mail/?p=ReceivingRateg8sor8229626oiy.175 - gsmtp

Should I contact gmail?