Q: Received email from just cloud?

Hi rachel.polanco,

Welcome to the Apple Support Communities! I'm sorry to hear you are having these issues with Mail on your Mac. If you are receiving unexpected or unwanted email from a company or service that you don't currently have a relationship with ("junk" email or "spam"), you may find the information and steps outlined in the following article helpful:

Mail (El Capitan): Reduce junk mail in your inbox

If you have concerns that the emails may be more nefarious (i.e. that they are "phishing" for personal information), you may also find this article useful:

Identifying fraudulent "phishing" email - Apple Support

Regards