What should I do before requesting removal from any blocklist?

You found your domain or IP on a blocklist. Your first instinct is probably to hit the removal request button immediately. Don't. The single biggest mistake senders make is requesting removal before fixing whatever caused the listing. Most blocklists will re-list you within hours if the problem is still active.

Think of it this way: the blocklist isn't your enemy. It's a symptom. Fix the cause first, then ask to be removed.

Before you submit any removal request, work through this checklist:

1. Identify the root cause. Check your sending logs for the date you were listed. Did you send to a purchased list? Did a large campaign go out to an old, unvalidated segment? Did complaint rates spike? Look at your blocklist entry details if available. Some blocklists (like Spamhaus) tell you exactly why you were listed. Read it carefully.
2. Stop the bleeding. Pause any active sends from the affected IP or domain until you've confirmed the problem is fixed. Sending more mail while you're investigating digs you deeper.
3. Fix your authentication. Check that SPF, DKIM, and DMARC are all correctly configured and passing. Authentication failures are a common trigger for listings, and some blocklists won't even consider a removal request if your authentication is broken. You can verify your setup with our free SPF checker and DKIM lookup.
4. Clean your list. If bad addresses, spam traps, or cold domains triggered the listing, you need to remove them before sending again. A single spam trap hit can cause a listing. Don't wait until after removal to clean. Do it now.
5. Check for ongoing issues. Run your domain and sending IPs through a blocklist checker to see if you're on multiple lists (it happens more often than you'd think). Each list is a separate problem to investigate. Our free blocklist checker covers the major ones.
6. Document what you've done. Write down what caused the listing and what you changed to fix it. Blocklist operators almost always ask this when you submit a removal request. A clear, honest explanation speeds things up considerably. Vague requests get ignored or denied.

Once you've worked through all of that, then submit your removal request. Not before.

If you're genuinely stuck on what caused the listing, or you're dealing with multiple blocklists at once, our SOS hotline is free and no-pitch. Sometimes a second pair of eyes finds the issue in minutes.