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Best Practices to Protect IP Reputation (For Shared Hosting Too)

Your IP reputation is the invisible gatekeeper that determines whether your emails reach the inbox—or get silently dropped. And in shared hosting environments, protecting that reputation becomes even more critical,...

Industry

Setting Up Feedback Loops and Abuse Reporting: A Host’s Guide to Protecting Email Reputation

Every email sender wants to land in the inbox—but what happens when recipients start clicking “Mark as Spam”? If you don’t have a system to detect and act on those...

Industry

Email Bounce Codes and What They Reveal About Your Reputation

When emails fail to deliver, they bounce back with strange numeric codes like 550 5.7.1 or 421 4.7.0. These are SMTP bounce codes, and they’re much more than error messages—they’re...

Industry

How to Get Off an IP Blacklist (Delisting Tips for Hosts)

If your IP address has landed on a blacklist, you’re not alone. Every day, legitimate hosts and email service providers find their IPs flagged for spam—sometimes due to a compromised...

Industry

IP Blacklist Lookup: How to Tell If You’ve Been Blocked

If your emails have suddenly stopped reaching inboxes—or worse, aren’t being delivered at all—your IP address may be on a blacklist. And when that happens, your email deliverability can plummet...

Industry

Top Reasons IPs Get Blacklisted (And How to Avoid It)

Getting blacklisted is one of the fastest ways to tank your email deliverability. Even if your messages are legitimate, a blacklisted IP address can send your emails straight to the...

Industry

How to Check Your IP Reputation (Tools & Step-by-Step)

If your emails are going missing, landing in spam, or bouncing back with cryptic SMTP errors, your IP reputation may be the culprit. Checking your IP reputation is one of...

Industry

IP Reputation vs. Domain Reputation: What’s the Difference?

When your emails don’t reach the inbox, one of the first things to check is reputation—but is the problem your IP address or your domain name? In this post, we’ll...

Industry

What Is IP Reputation? And Why It Matters for Email Delivery

If your emails aren’t landing in the inbox, your IP reputation may be the reason. IP reputation is a score mailbox providers assign to your server’s IP address. A bad...

Industry

The Best SMTP Relay Services Compared (2025 Edition)

Which Provider Keeps Your Email Out of Spam—and Off Blocklists? If your emails aren’t landing in the inbox, your SMTP relay service might be the reason. Whether you’re a web...

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