Key facts
- Run your sending domain and IP through a free blocklist checker, and read your bounce messages, which often carry the blocklist's own reason for the listing.
- If you are listed, stop sending from that domain, fix the cause, such as bad addresses or complaints, then follow the list's removal steps.
- How long removal takes depends on the list.
- Each list has its own criteria, and each listing includes a short note on why you were added.
How do domains end up listed?
Each list has its own criteria, and each listing includes a short note on why you were added. Source: RFC 5782 Fix that cause before you ask for removal.
Domain list or IP list?
Most lists block the server IP that sends your mail, and a few list domain names. Source: RFC 5782 Check both. If you use a shared sending service, the IP may belong to many senders.
How do I avoid it next time?
Send only to checked addresses, keep volume low per mailbox, and use a separate sending domain so your main company email is protected.
How to check and recover
- Check the lists
Use a free multi-list checker for the domain and the IP.
- Stop sending
Pause that domain while you work out why.
- Fix the cause
Remove bad addresses and anyone who complained.
- Request removal
Follow each list's own process, then restart slowly.
When does Buzzlist fit, and when does it not?
It fits when
- You want sending limits and checks that make listings less likely.
It does not fit when
- You need a domain cleaned up overnight. No tool can promise that.
Questions people ask next
Does every blocklist matter?
Not equally. A listing only blocks mail at servers that check that list.
Can I pay to be removed?
Use the removal process on the list's own website, and be wary of anyone else who offers paid removal.
Should I switch to a new domain?
Fix the cause first, or a new domain can end up listed for the same reason.
How does Buzz Send help?
It checks email status before sending, skips addresses that fail, and pauses a mailbox at a 5 percent bounce rate or after a complaint.
Sources
Checked October 9, 2026. Rules change, so read the source before you rely on it. This is general information, not legal advice.