Yes, we do.
Our system automatically sends out renewal notices beginning 30 days prior to the domain expiration date to the email address indicated in the settings of your account and to domain's Registrant email address listed in Whois.
We send you renewal notices again 15, 7, 3 days and 1 day before the domain expiration date.
Please make sure that if you have any spam filters, they are set to accept our emails. A 30-days renewal notification can be found in the Unread Messages section of your account (other notifications are not shown there).