Absolutely. Domain reputation is used by all major mail service providers like Gmail, Yahoo, Outlook, Hotmail, AOL, and many more to identify SPAM and abusive senders. If you are unsure if your email domain reputation is contributing to poor email deliverability, please use our free email SPAM check to identify possible issues. We also recommend checking your domain health with the lookup tool above. Cleaning email lists every 6-12 months, especially for older subscribers can greatly improve domain reputation.