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ISP Feedback Loops for Marketing Cloud

Publiceringsdatum: Sep 30, 2025
Beskrivning

ISP (Internet Service Provider) Feedback Loops (FBLs) are mechanisms that allow ISP users (end subscribers) to click on the “report spam” or “this is spam” button in their email client, which tells their ISP that they find a given email message to be unwanted. 


After an end subscriber clicks on the “report spam” or “this is spam” button in the user interface of a given email client, an “FBL complaint” is sent back to Salesforce Marketing Cloud for processing. Upon receipt of this FBL complaint, the recipient who lodged the complaint will be unsubscribed from mailings from that client. The complaint is logged and the recipient will show up in send stats as a complaint and as an unsubscribe.

Lösning

Feedback Loop Participation for Marketing Cloud Clients

All Marketing Cloud clients are signed up for these ISP feedback loops automatically:


Bluetie (Excite), Comcast, Cox, Fastmail, Microsoft Hotmail, Italia Online, La Poste, Liberty Global, Locaweb, Mail.ru, OpenSRS (Tucows), Rackspace (Mailtrust), Seznam, Synacor, Telenor, Telstra, Terra, UOL (Brazil), USA.net, XS4ALL, and Yandex.


No action is required on the client’s part to participate in the above-listed feedback loops. Salesforce Marketing Cloud bulk-registers all of our sending IP address ranges with these ISP feedback loops.
 

Yahoo! Mail: Authenticated sending domains are enrolled in this feedback loop by default. To support Yahoo FBL, a DKIM signature is added to messages with a d=<stack>.y.mc.salesforce.com. 

Gmail: Individual complaints are not shared with email platforms. A mechanism Gmail describes as their 'feedback loop' makes aggregate complaint data available in Postmaster Tools. Review the Gmail Feedback Loop article for more details. Note that it is occasionally possible to see a Gmail complaint in reporting. Note: Gmail data can show up in complaints when the email is forwarded to a domain that has a feedback loop. For example, a send goes to Gmail subscriber which auto-forwards to their Comcast account. The subscriber complains in Comcast, their feedback loop returns it, but the original subscriber address will be recorded.
 

QQ.com: The feedback loop for the Chinese domain QQ.com is no longer active. The sign-up has been offline since December 2019.

Knowledge-artikelnummer

000380562

 
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Salesforce Help | Article