Any offer or e-mail about renewing, expiration notices, or about listing in a business directory or search engine, other than e-mails from your own provider, is SPAM!
Any e-mail from ICANN (ERRP / WDRP) or SIDN are just reminders, at the end of your registration year, or to keep your details up to date. Good to know, but ignore these mails. When registering a domain with MyBrain.biz, your domain registration will automatically be renewed every year.
Any other questions? Contact My Brain!