| ISP | Postmaster site | Feedback Loop | Whitelist | Support |
|---|---|---|---|---|
AOL | Whitelist Signup | |||
AT&T | does not offer | does not offer | ||
Bellsouth (AT&T) | does not offer | does not offer | ||
Charter | does not offer | does not offer | ||
Comcast | does not offer | |||
Cox | does not offer | |||
Earthlink | Send email to fblrequest@abuse.earthlink.net | does not offer | ||
Excite | does not offer | does not offer | ||
Fastmail | ||||
GMX | ||||
Gmail | does not offer | |||
Hotmail (Outlook) | ||||
Integra | does not offer | does not offer | does not offer | |
Juno | ||||
Live.com (Outlook) | ||||
Mail.com | does not offer | does not offer | ||
Mail.ru | ||||
Netzero | ||||
Office365 | ||||
OpenSRS | ||||
Outlook | does not offer | |||
QQ | does not offer | does not offer | ||
Rackspace | does not offer | |||
Roadrunner | does not offer | |||
Synacor | ||||
Telenor | ||||
Terra.com.br | ||||
Time Warner Cable | ||||
Tucows | does not offer | does not offer | does not offer | |
United Online | does not offer | Whitelist Signup | ||
Usa.net | does not offer | |||
Verizon | does not offer | Whitelist Signup | does not offer | |
Yahoo | Yahoo! Mail Bulk Sender Form | |||
XS4ALL | ||||
Zoho |