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fbl email handling

How to Process Feedback Loops

Written by Julia G

What Feedback Loops Are Feedback loop (FBL) is the mechanism by which Internet service providers (ISPs) report spam complaints to senders. Spam complaints (or abuse complaints) are generated when a subscriber clicks the “Report as spam” button in their email client. The ISP forwards the complained message back to a designated email address that has been set up by you …