Why am I not receiving Yahoo FBL reports since December 2024?

The perceived absence of Yahoo FBL reports since late 2023 or early 2024 is largely due to two critical developments in the email ecosystem. First, Yahoo significantly updated its own Complaint Feedback Loop (CFL) system, requiring senders to re-enroll and adjust their parsing for new report formats that no longer include full message content. Second, and more profoundly, Google and Yahoo jointly implemented stringent new bulk sender requirements starting in February 2024. These mandates require strong email authentication like DMARC, a spam complaint rate below 0.3%, and a one-click unsubscribe option. When email programs fail to meet these stricter standards, messages are increasingly rejected, blocked, or routed directly to spam. Since FBL reports are generated only when recipients mark delivered emails as spam, a lack of inbox placement means no complaints can be registered, and consequently, no FBL reports are triggered. This shift, combined with some ISPs integrating complaint data into Postmaster Tools rather than direct email reports, contributes to the observed cessation of FBL reports.

A sudden cessation of Yahoo FBL reports, particularly since late 2023 or early 2024, is primarily due to a combination of Yahoo's internal Complaint Feedback Loop (CFL) system updates and the widespread impact of new, stricter bulk sender requirements from Google and Yahoo. Yahoo required senders to re-enroll in their updated CBL system and modified the FBL report format to exclude full message content and use lowercase ARF messages. More profoundly, the new sender mandates, effective February 2024, necessitate robust email authentication like DMARC, a spam complaint rate under 0.3%, and an easy one-click unsubscribe option. When email programs do not meet these elevated standards, messages are frequently rejected, blocked, or automatically sent to the spam folder. This lack of inbox placement means recipients cannot mark emails as spam, consequently preventing FBL reports from being triggered. Additionally, many ISPs are transitioning to provide complaint data through their Postmaster Tools rather than traditional direct email reports, further contributing to the perceived absence of these reports.

The absence of Yahoo FBL reports can be directly linked to Yahoo's updated bulk sender requirements, which became effective in February 2024. These stricter standards for email deliverability, encompassing robust authentication, easy unsubscribe options, and low complaint rates, significantly impact how messages reach inboxes. If emails fail to satisfy these criteria, they are likely to be blocked, sent to spam, or outright rejected by Yahoo. This inability to reach recipients means no user complaints are generated, thereby ceasing the flow of FBL reports.

The cessation of Yahoo FBL reports, particularly observed since late 2023 or early 2024, is predominantly a consequence of the stricter bulk sender requirements jointly implemented by Google and Yahoo, which became effective in February 2024. These mandates necessitate robust email authentication, a very low spam complaint rate, and a clear one-click unsubscribe option. When email programs do not meet these elevated standards, messages are often rejected, filtered into spam folders, or outright blocked, preventing them from reaching the intended recipients. Since Feedback Loop reports are contingent on users marking delivered emails as spam, a failure in inbox placement directly results in the absence of these crucial complaint reports.