How can I track spam complaints for my marketing emails?

Summary

Tracking spam complaints effectively involves a multifaceted approach encompassing technical implementations, proactive monitoring, and list hygiene practices. Key methods include leveraging Feedback Loops (FBLs) provided by major ISPs like Gmail (through Google Postmaster Tools) and Outlook.com (via JMRP) to receive direct reports on spam complaints. Using tools like GlockApps aids in deliverability testing and assessing inbox placement. Maintaining clean email lists through regular scrubbing, implementing email authentication protocols (SPF, DKIM, DMARC), and monitoring overall sending reputation are also crucial. Seed testing, particularly when onboarding with new vendors, helps in estimating complaint rates. Ultimately, a robust strategy combines technical setups, active monitoring, and continuous list management to ensure optimal email deliverability and sender reputation.

Key findings

  • ISP Feedback Loops (FBLs): Setting up and actively monitoring FBLs provided by ISPs like Gmail and Outlook.com is fundamental for receiving direct spam complaint reports.
  • Deliverability Testing Tools: Utilizing tools like GlockApps can simulate sending emails and provide insights into inbox placement and potential deliverability issues.
  • List Hygiene Practices: Regularly cleaning email lists by removing unengaged subscribers and implementing email authentication (SPF, DKIM, DMARC) significantly reduces spam complaints.
  • Sending Reputation: Consistently monitoring your sending reputation through postmaster tools and other resources is essential for identifying and addressing deliverability problems.
  • Seed Testing for Estimation: Seed testing helps with the estimation of spam complain rates

Key considerations

  • Technical Implementation of FBLs: Setting up FBLs requires technical expertise to implement specific headers and register with each ISP's program.
  • Continuous Reputation Monitoring: Regularly monitoring your sending reputation and deliverability metrics allows for proactive identification and resolution of issues.
  • Email Authentication Configuration: Properly configuring email authentication protocols (SPF, DKIM, DMARC) is crucial for proving the legitimacy of your emails and reducing the likelihood of being marked as spam.
  • Balance Testing and Real-World Performance: While deliverability testing tools provide valuable insights, they should be complemented with real-world performance data for a comprehensive assessment.
  • Data Privacy Compliance: Ensure compliance with data privacy regulations (e.g., GDPR) when managing email lists and handling subscriber data.

What email marketers say
13Marketer opinions

Tracking spam complaints for marketing emails is essential for maintaining a healthy sending reputation and ensuring emails reach the inbox. Key methods include setting up and monitoring Feedback Loops (FBLs) provided by ISPs, which report spam complaints directly. Using tools like Google Postmaster Tools and GlockApps can provide insights into deliverability metrics and inbox placement. Maintaining clean email lists by removing unengaged subscribers and implementing email authentication protocols (SPF, DKIM, DMARC) are crucial for reducing complaints and improving deliverability.

Key opinions

  • Feedback Loops: ISPs provide Feedback Loops (FBLs) to report spam complaints, allowing senders to identify and remove complainers.
  • Deliverability Tools: Tools like Google Postmaster Tools and GlockApps offer insights into deliverability metrics and inbox placement.
  • List Hygiene: Maintaining clean email lists by removing unengaged subscribers helps prevent spam complaints.
  • Email Authentication: Implementing email authentication protocols (SPF, DKIM, DMARC) is crucial for improving deliverability and reducing spam complaints.

Key considerations

  • Technical Implementation: Setting up feedback loops and email authentication requires technical implementation and registration with each ISP.
  • Proactive Monitoring: Actively monitor spam complaint rates and deliverability metrics to identify and address potential issues promptly.
  • Content Relevance: Ensure content is relevant and engaging to reduce the likelihood of recipients marking emails as spam.
  • Tool Costs: Some deliverability tools have costs associated that need to be taken into consideration
Marketer view

Email marketer from Mailjet shares that FBLs and manually unsubscribing users are good methods to track spam complaints. Suggests users can also work with an email deliverability provider to keep track of your sender reputation.

December 2021 - Mailjet
Marketer view

Marketer from Email Geeks recommends Laura Atkin's website wordtothewise.com for up-to-date information on deliverability and related topics.

December 2021 - Email Geeks
Marketer view

Email marketer from Litmus shares that list hygiene is critical. Monitoring unsubscribe rates and spam complaints helps maintain a healthy subscriber list. Consistently cleaning your email list improves deliverability and protects sender reputation.

October 2024 - Litmus
Marketer view

Email marketer from ReturnPath recommends using tools to monitor deliverability metrics such as spam complaint rates. Tools offer insights into inbox placement and sender reputation. Monitoring these metrics is crucial for identifying deliverability problems.

July 2021 - ReturnPath
Marketer view

Email marketer from SendGrid explains that actively monitoring spam complaints is essential for maintaining a healthy sending reputation. ISPs use complaint rates as a primary factor in determining whether to deliver emails to the inbox or the junk folder. High spam complaint rates will lead to deliverability issues.

October 2024 - SendGrid
Marketer view

Email marketer from DigitalMarketer explains that implementing email authentication protocols (SPF, DKIM, DMARC) is essential for improving deliverability and reducing spam complaints. Authentication helps prove that your emails are legitimate and reduces the risk of spoofing.

May 2021 - DigitalMarketer
Marketer view

Email marketer from Validity shares that monitoring complaint rates alongside spam trap hits is important. High complaint rates indicate that your emails are not resonating with subscribers, and spam traps identify issues with list acquisition or maintenance.

October 2024 - Validity
Marketer view

Email marketer from Gmass shares using Google Postmaster Tools to monitor your domain's reputation with Gmail. It provides insights into spam rates, authentication, and other deliverability metrics, and is essential if you send emails to Gmail users.

January 2022 - Gmass
Marketer view

Email marketer from EasyDMARC explains that Feedback Loops provide insights into spam complaints and are crucial for identifying and removing problematic recipients. High complaint rates negatively impact sender reputation and deliverability.

January 2025 - EasyDMARC
Marketer view

Email marketer from Quora explains that maintaining clean email lists and sending relevant content improves deliverability. Actively removing unengaged subscribers prevents spam complaints and boosts reputation.

August 2022 - Quora
Marketer view

Marketer from Email Geeks shares that ISP Feedback Loops are typically sent in ARF. Suggests checking out GlockApps list.

September 2022 - Email Geeks
Marketer view

Email marketer from StackOverflow explains that setting up feedback loops requires technical implementation, including adding specific headers to your email. You'll need to register with each ISP that offers a feedback loop program.

January 2024 - StackOverflow
Marketer view

Email marketer from Reddit recommends using GlockApps to check deliverability. This tool can simulate sending emails to various mailboxes and provides a report on whether the emails land in the inbox, spam folder, or are blocked.

December 2023 - Reddit

What the experts say
3Expert opinions

Tracking spam complaints for marketing emails involves setting up and monitoring Feedback Loops (FBLs) with major ISPs to receive reports on spam complaints. Seed testing is often used, especially when onboarding with new vendors, to estimate complaint rates. Monitoring your sending reputation, including spam complaint rates through feedback loops and postmaster tools provided by ISPs, is crucial for maintaining deliverability.

Key opinions

  • Feedback Loops: Feedback Loops (FBLs) are important for receiving reports on spam complaints from major ISPs.
  • Seed Testing: Seed testing is often used to estimate complaint rates, particularly when onboarding with new vendors.
  • Reputation Monitoring: Monitoring your sending reputation, including tracking spam complaint rates, is crucial.

Key considerations

  • Setup FBLs: Setting up Feedback Loops with major ISPs is necessary to receive complaint reports.
  • Seed Testing Limitations: Seed testing provides an estimate of complaint rates and may not be fully representative of overall campaign performance.
  • Proactive Reputation Management: Actively monitor and manage your sending reputation using available tools and data.
Expert view

Expert from Spam Resource explains the importance of setting up and monitoring Feedback Loops (FBLs) with major ISPs to receive reports on spam complaints. This allows senders to identify and remove complainers from their lists, improving deliverability.

September 2023 - Spam Resource
Expert view

Expert from Word to the Wise explains that monitoring your sending reputation is crucial. This includes tracking metrics like spam complaint rates through feedback loops and postmaster tools provided by ISPs.

March 2024 - Word to the Wise
Expert view

Expert from Word to the Wise answers how complaint rates are usually estimated by seed testing, where one or more seed email addresses are used as a part of a larger list. It states that seed testing is most often used when onboarding with new vendors.

December 2022 - Word to the Wise

What the documentation says
3Technical articles

Tracking spam complaints involves utilizing Feedback Loops (FBLs) provided by major ISPs. Google's Gmail Feedback Loop, accessed via Google Postmaster Tools, requires implementing specific headers (Message-ID) to monitor spam rates from Gmail users. Microsoft's Outlook.com recommends the Junk Mail Reporting Program (JMRP) to access data on user complaints. SparkPost explains that FBLs are a mechanism by which ISPs forward complaint data, allowing senders to remove subscribers who mark email as spam, improving their sending reputation.

Key findings

  • Gmail FBL: Gmail provides a Feedback Loop (FBL) accessed via Google Postmaster Tools, requiring specific header implementation.
  • Outlook.com JMRP: Outlook.com recommends the Junk Mail Reporting Program (JMRP) to access user complaint data.
  • FBL Mechanism: ISPs forward complaint data through FBLs, enabling senders to remove complainers and improve reputation.

Key considerations

  • Technical Setup: Implementing Gmail's FBL requires adding specific headers (Message-ID) to identify campaigns.
  • Program Registration: Accessing complaint data from Outlook.com requires using the Junk Mail Reporting Program (JMRP).
  • Subscriber Removal: Using FBL data to remove subscribers who mark email as spam is crucial for maintaining a good sending reputation.
Technical article

Documentation from Microsoft details how Outlook.com determines sender reputation. High complaint rates directly impact sender reputation. They recommend using the Junk Mail Reporting Program (JMRP) to access data about user complaints marked in Outlook.com.

November 2023 - Microsoft
Technical article

Documentation from Google explains that the Gmail Feedback Loop (FBL) is a tool for senders to monitor spam rates when sending to Gmail users. Senders need to implement specific headers (Message-ID) to identify campaigns. Aggregated spam reports are then available via Google Postmaster Tools.

April 2024 - Google
Technical article

Documentation from SparkPost explains that complaint feedback loops (FBLs) are a mechanism by which ISPs forward complaint data to senders. This allows senders to remove subscribers who mark email as spam from their lists and improve their sending reputation.

January 2022 - SparkPost