All sources confirm that Google Postmaster Tools does not provide a direct method for identifying individual users generating spam complaints due to privacy considerations. Instead, the tool offers aggregated data on campaign performance and spam rates. Experts and documentation emphasize the importance of addressing the root causes of complaints by improving sending practices, such as list hygiene, engagement-based segmentation, and opt-in procedures. While direct identification isn't possible, using campaign IDs, analyzing segment performance, and implementing external feedback loops can offer insights. The consensus is that focusing on overall email program health and responsible sending is the most effective strategy.
10 marketer opinions
The consensus is that Google Postmaster Tools does not provide a direct way to identify individual users generating spam complaints. Instead, it offers aggregated data to protect user privacy. Strategies to mitigate spam complaints involve focusing on improving overall list quality, segmentation, engagement tracking, content improvement, and utilizing campaign IDs for broader analysis. External feedback loops and ESP tools can supplement data, but direct user identification through Google Postmaster Tools remains impossible.
Marketer view
Email marketer from Stack Overflow, suggests you can't get direct user IDs. Instead, focus on reducing spam complaints by improving email content, targeting, and list hygiene. Monitor trends in Postmaster Tools and adjust your sending practices accordingly.
31 Dec 2021 - Stack Overflow
Marketer view
Email marketer from Sender explains to use campaign IDs in email headers and monitor Postmaster Tools to identify campaigns with high spam rates, then investigate the audience of those campaigns for potential problem users, even without direct user identification.
23 Jan 2022 - Sender.net
4 expert opinions
Experts across multiple sources agree that Google Postmaster Tools does not offer a direct method to identify individual users who generate spam complaints. The platform prioritizes user privacy by providing only aggregated data. Furthermore, experts suggest focusing on improving sending practices, such as opt-in procedures, list hygiene, and engagement-based segmentation, to mitigate complaints proactively rather than simply removing complainers.
Expert view
Expert from Email Geeks shares that Gmail representatives have stated they prefer senders to address the root causes of complaints rather than simply removing complaining users.
11 Feb 2025 - Email Geeks
Expert view
Expert from Word to the Wise answers that Google’s Feedback Loop (FBL) provides limited data, focusing on overall campaign performance rather than individual user complaints. They suggest focusing on opt-in practices, list hygiene, and engagement-based segmentation to mitigate complaints preemptively.
6 Aug 2022 - Word to the Wise
5 technical articles
Documentation from various sources, including Google Support, Google Postmaster Tools Help, Gmail Help, RFC, and Validity, consistently states that Google Postmaster Tools does not allow direct identification of individual users generating spam complaints. The Gmail Feedback Loop (FBL) provides aggregated and anonymized data for high-volume senders to identify campaigns causing spam complaints, requiring specific headers and authentication. The data is not provided in Abuse Reporting Format (ARF), further limiting user-level identification. Maintaining a good sender reputation through authentication, list hygiene, and engagement is crucial.
Technical article
Documentation from Gmail Help outlines the process of setting up a Feedback Loop (FBL). This involves authenticating email, sending from a consistent IP address, and embedding specific identifiers in the email headers, which Google then uses to aggregate spam complaints for reporting purposes.
20 Sep 2022 - Gmail Help
Technical article
Documentation from Validity explains how to set up and use Feedback Loops (FBLs) with various ISPs, including Gmail. It emphasizes that Gmail's FBL provides aggregate data, not individual complainant information. Focus on authentication, list hygiene, and engagement to maintain a good sender reputation.
22 Dec 2022 - Validity
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