ISP Feedback Loops

A Feedback Loop (FBL) is a system by which an Internet Service Provider provides the sender a copy of the message that one of their subscribers has reported as spam — usually by hitting a “report spam” button in that ISP’s mail interface.

ISPs offer feedback loops to qualified senders, so the senders can identify subscribers who no longer want to receive similar mail and/or any problems originating from their networks, such as virus-infected spam-producing machines.

This page summarizes the information about FBL signup pages, whitelist pages, and postmaster pages of most popular ISPs around the world.

ISP FBL Signup Whitelist Signup Postmaster Page
AOL AOL FBL signup does not provide AOL postmaster
AT&T does not provide does not provide AT&T postmaster
Bellsouth does not provide does not provide Bellsouth postmaster
BlueTie BlueTie FBL signup does not provide BlueTie postmaster
Comcast Comcast FBL signup does not provide Comcast postmaster
Centrum.cz Centrum FBL signup by email does not provide does not provide
Cox Cox FBL signup does not provide Cox postmaster
Earthlink Earthlink FBL signup does not provide does not provide
Excite (Bluetie) Excite FBL signup does not provide Excite postmaster
FastMail FastMail FBL signup does not provide does not provide
Gmail Gmail FBL signup (ESP only) does not provide Gmail postmaster
Hotmail Hotmail FBL signup does not provide Hotmail postmaster
LaPoste.net Universal FBL service signup does not provide LaPoste.net postmaster
Libero (Italiaonline) Italiaonline FBL signup does not provide does not provide
Liberty Global (Chello, UPC, and UnityMedia) Universal FBL service signup does not provide does not provide
Locaweb Locaweb FBL signup does not provide Locaweb postmaster
Mail.ru Mail.ru FBL signup does not provide Mail.ru postmaster
OpenSRS (Tucows) OpenSRS FBL signup does not provide postmaster@opensrs.com
Outblaze Outblaze FBL signup does not provide does not provide
Rackspace Rackspace FBL signup does not provide Rackspace postmaster
Seznam.cz Seznam FBL signup does not provide Seznam postmaster
Synacor Synacor FBL signup does not provide does not provide
Swisscom (Bluewin) Universal FBL service signup does not provide Swisscom postmaster
Telecom Italia Universal FBL service signup does not provide does not provide
Telenet Universal FBL service signup does not provide does not provide
Telenor Universal FBL service signup does not provide does not provide
Telstra Universal FBL service signup does not provide does not provide
Terra.com.br Terra FBL signup does not provide Terra postmaster
UnitedOnline (NetZero/Juno) Report Junk Mail UnitedOnline Whitelist signup UnitedOnline postmaster
UOL UOL FBL signup does not provide UOL postmaster
USA.net Universal FBL service signup does not provide USA.net postmaster
Verizon Verizon FBL signup does not provide Verizon postmaster
Virgilio Universal FBL service signup does not provide Virgilio postmaster
Virgin Media Universal FBL service signup does not provide does not provide
XS4ALL Universal FBL service signup does not provide does not provide
Yahoo! Yahoo! FBL signup does not provide Yahoo! postmaster
Yandex Yandex FBL signup does not provide Yandex postmaster
Ziggo Universal FBL service signup does not provide does not provide
ZOHO ZOHO FBL signup does not provide does not provide