Domain Registry of America and Domain Renewal Group

Beware of letter from the Domain Registry of America

Many companies and consumers who have registered a domain name ending in ".com" or ".org" receive a letter from the Domain Registry of America entitled "Domain Name Expiration Notice".

Please note, it looks like a regular invoice, and it appears as if you need to renew your subscription for the domain name with your Registrar (Simply.com). But it is a scam invoice.
At closer inspection, it appears that they want you to change Registrar to the Domain Registry of America and send your credit card information with the return envelope, which goes to a company with an address in England.

If you do not wish to change Registrar, ignore the inquiry.

... in other words, burn the letter.