Blacklist & Reputation Checks

25% of your score. Reputation reflects your sending history — and a blacklisting can sink deliverability no matter how clean your authentication is.

IP Blacklist Scan — 8 pts

Checks your sending IP against the major DNS blacklists (DNSBLs). Why it matters a listing — especially on Spamhaus — gets mail sent to spam or rejected outright. How to fix identify the list and reason, fix the root cause (compromised account, complaints, bad hygiene), then request delisting. Use the Blacklist Checker.

Domain Blacklist Scan — 5 pts

Checks your sending domain against URI/domain blacklists. Why it matters domain reputation follows you across IPs and is harder to repair than IP reputation. How to fix remove the cause of the listing, then request review with the listing service.

Body Link Blacklist — 4 pts

Checks the URLs and domains inside your email body against blacklists. Why it matters a single blacklisted link — a shortener, a tracking domain, an affiliate URL — can spam-flag the whole message. How to fix audit every link domain you include and drop or replace any that are listed.

Domain Age — 4 pts

Checks how old your sending domain is. Why it matters brand-new domains have no reputation and are treated cautiously; this is why fresh domains need warm-up. How to fix there’s no instant fix — warm up new domains gradually and avoid sending bulk mail from a domain registered days ago.

Sender Reputation — 4 pts

Checks aggregate reputation signals for your IP and domain. Why it matters it’s the rolling summary mailbox providers use to decide placement. How to fix keep complaint and bounce rates low, mail engaged recipients, and maintain consistent volume — reputation is earned over weeks, not toggled.