How do I sign up for FBLs?
Still have a question, spotted an error, or have a better explanation or a source we should cite?
If your ESP runs shared infrastructure, you might already be covered. Check with them before you spend a day on enrollment paperwork. If you're on a dedicated IP or your own SMTP, here's the actual process.
Before you start
You need three things in place or enrollment will fail:
- SPF, DKIM, and DMARC passing on your sending domain. Most providers reject FBL applications without these.
- An inbox you control that can receive ARF-formatted email. Often
abuse@yourdomain.comorfbl@yourdomain.com. Many providers expect this address to exist per RFC 2142. - Verified ownership of your sending IP and domain. You'll prove this either through DNS records or by responding to a verification email.
Microsoft (JMRP) for Outlook / Hotmail / Microsoft 365
Sign up at the Microsoft SNDS portal first, then apply for JMRP from inside it. You enroll by sending IP, not domain. Approval typically takes a few business days. After approval, ARF reports start arriving at the address you specified.
Yahoo / AOL Complaint Feedback Loop
One application covers both Yahoo Mail and AOL Mail. Apply through Yahoo's postmaster page. They want sending IPs and the inbox to send reports to. Approval is usually quick, sometimes within a day.
Gmail (no FBL, use Postmaster Tools)
Gmail doesn't have a per-recipient FBL. Instead, set up Google Postmaster Tools by adding a TXT record to your sending domain's DNS. Once verified, the dashboard shows aggregate complaint rate, spam rate, and reputation by domain. This is the closest you get to Gmail FBL data.
What to expect after registration
Most enrollments take 1 to 5 business days for approval. ARF reports start within 24 to 48 hours of activation. If you go a week with zero reports and your volume is real, double-check that DKIM is signing your mail with the sending domain you registered. Mismatched signing is the most common silent failure.
If enrollment doesn't go through and you can't tell why, Review My Emails will check whether your authentication, DNS, and rDNS are actually set up the way the providers expect.
Contributors
Who worked on this answer
Every name links to their profile. Every company links to their site. Real people, real accountability.
