This page is aimed at providing a list of available feedback loops and postmaster pages to help senders.
| ISP | FBL Sign-up page | Postmaster page |
| AOL | FBL | View |
| AT&T | Not available | View |
| Charter | Not available | View |
| Comcast | FBL | View |
| Cox | FBL | View |
| Earthlink | Email fblrequest@abuse.earthlink.net subject: feedback loop request with: Company name and contact Contact email address – Complaints email address – CIDR | View |
| Free.fr | Not available | View |
| GMail | FBL (for ESPS only) | View |
| Hotmail | JMRP | View |
| Laposte.net | FBL | View |
| Mail.com | Not available | View |
| Mail.ru | FBL | View |
| OpenSRS | FBL | Not available |
| Available if registered as local business | View | |
| Spectrum | Not available | View |
| Skynet.be | Not available | View |
| Synacor | FBL | Not available |
| Terra.com.br | FBL | View |
| T-online.de | Not available | View |
| Usa.net | FBL | View |
| Yahoo! | FBL | View |
| XS4ALL | FBL | View |
| Zoho | FBL | Not available |
This page will be updated with new FBL & postmaster pages as soon we become aware of them.