Why does email engagement drop with Gmail on the 5th of each month?

Summary

The recurring drop in Gmail engagement on the 5th of each month is a complex issue with multiple potential causes. Changes in Gmail's algorithms, list fatigue, incomplete IP warming (for new IPs), sender reputation damage due to low engagement or complaints, and segmentation problems are all contributing factors. Sudden unsubscriptions and external events, such as sales pushes, can also play a role. To mitigate these issues, experts recommend proactive engagement strategies, monitoring sender reputation through Google Postmaster Tools and Microsoft SNDS, A/B testing to identify problematic email elements, improving content relevance and segmentation, ensuring proper email authentication, monitoring IP and domain health, and proactively managing list quality.

Key findings

  • Algorithm Changes: Gmail's algorithm or filtering rules may change periodically, impacting engagement.
  • List Fatigue: Sending too frequently or with irrelevant content leads to subscriber burnout.
  • IP Warming Issues: New IP addresses need proper warming to avoid temporary delivery restrictions.
  • Sender Reputation: Low interaction and complaints damage sender reputation, affecting deliverability.
  • Segmentation Problems: Poor segmentation results in irrelevant content, decreasing engagement.
  • External Factors: Sales pushes or other external email activity can negatively impact metrics.
  • Sudden Unsubscriptions: Spikes in unsubscriptions can reduce engagement rates.
  • Lack of Monitoring: Failing to monitor deliverability metrics can lead to unnoticed problems.

Key considerations

  • Proactive Engagement: Engage proactively with subscribers, especially on the 5th, to potentially offset issues.
  • Monitor Reputation: Use Google Postmaster Tools and Microsoft SNDS to track sender and domain reputation.
  • A/B Test Elements: Experiment with subject lines, content, and sender names to identify problematic elements.
  • Improve Relevance: Segment lists and personalize content to increase relevance and engagement.
  • Email Authentication: Implement SPF, DKIM, and DMARC to authenticate emails and improve deliverability.
  • List Management: Regularly clean your email list to remove unengaged subscribers.
  • Check Sending Sources: Ensure all email sources are properly authenticated and compliant.
  • Investigate Metrics: Examine metrics (hard and soft) to determine if they support your assumption or point you in a different direction.

What email marketers say
10Marketer opinions

Consistent drops in Gmail engagement on the 5th of each month can stem from a variety of factors, including changes in Gmail's filtering algorithms, list fatigue due to over-mailing or irrelevant content, incomplete IP warming for new IPs, and issues with sender reputation. Segmentation problems, low subscriber interaction, and even external factors like sales pushes from other sources can also contribute. Strategies for mitigation involve proactive engagement, monitoring sender reputation via Google Postmaster Tools, testing subject lines and content, improving content relevance, and ensuring proper email authentication and list management.

Key opinions

  • Algorithm Shifts: Gmail's filtering algorithms may change around the 5th, affecting placement.
  • List Fatigue: Sending too frequently or with irrelevant content leads to subscriber disengagement.
  • Incomplete IP Warming: New IPs may face temporary restrictions until positive engagement is established.
  • Sender Reputation: Low interaction rates and spam complaints damage sender reputation and deliverability.
  • Segmentation Issues: Inaccurate or outdated segmentation leads to irrelevant content delivery.
  • External Factors: Sales pushes from other sources might impact engagement rates.

Key considerations

  • Proactive Engagement: Consider proactively sending to engaged recipients on the 5th to test impact.
  • Sender Reputation Monitoring: Monitor sender reputation using Google Postmaster Tools.
  • A/B Testing: A/B test subject lines, content, and 'from' names around the 5th of each month.
  • Content Relevance: Improve content relevance through segmentation and personalization.
  • Email Authentication: Ensure proper email authentication (SPF, DKIM, DMARC) to improve deliverability.
  • List Management: Regularly remove inactive subscribers and maintain a clean email list.
  • Investigate Other Sending Sources: Check for other sources that may be sending emails which is impacting your domain.
Marketer view

Email marketer from Reddit suggests that engagement dips on a consistent date could be related to changes in Gmail's algorithm or filtering rules applied around that time. It also suggests considering the possibility that the email list is becoming stale or that content relevance is declining, prompting Gmail to adjust placement.

November 2024 - Reddit
Marketer view

Marketer from Email Geeks suggests proactively sending to engaged recipients on the 5th of each month to potentially mitigate the pattern of engagement drop with Gmail. It's a way to test if it short-circuits the issue, while the underlying cause remains unknown.

April 2024 - Email Geeks
Marketer view

Email marketer from Email Marketing Advice Forum responds that low interaction rates can damage your sender reputation and affect deliverability. Focus on encouraging subscriber engagement through compelling content, interactive elements, and clear calls to action. Regularly remove inactive subscribers from your list to improve engagement metrics.

August 2021 - Email Marketing Advice Forum
Marketer view

Email marketer from Email Analytics Blog suggests A/B testing email elements like subject lines and 'from' names around the 5th of each month to identify potential issues triggering engagement drops. Comparing results before, during, and after the drop can reveal insights into what's affecting performance.

July 2021 - Email Analytics Blog
Marketer view

Email marketer from Marketing Automation Blog suggests that segmentation issues could contribute to engagement declines. Ensure that your segmentation criteria are accurate and up-to-date to target the right subscribers with relevant content. Regularly review and refine your segmentation strategy based on subscriber behavior and preferences.

June 2023 - Marketing Automation Blog
Marketer view

Email marketer from Email Deliverability Blog responds that if using a new IP address, consistent engagement dips could be due to incomplete IP warming. Gmail might be temporarily restricting delivery until sufficient positive engagement is established.

January 2023 - Email Deliverability Blog
Marketer view

Email marketer from Mailchimp Community responds that consistent drops could be due to list fatigue. Even with engaged subscribers, sending too frequently or with irrelevant content can lead to disengagement and filtering by Gmail.

June 2024 - Mailchimp Community
Marketer view

Email marketer from Email Marketing Tips Website responds that a drop in engagement could stem from increasingly irrelevant content. They recommend reviewing email content to ensure it's highly targeted and valuable to subscribers. Segmenting lists and personalizing content can also help improve engagement.

October 2022 - Email Marketing Tips Website
Marketer view

Marketer from Email Geeks suggests a few troubleshooting tips for the monthly email engagement dips. He recommends checking if there are any other email sources besides the primary one and configuring DMARC p=none (reporting only) to discover potentially unknown sources. He also suggests considering the possibility of sales pushes or cold emails sent from other services or rogue staff at the end of the previous month, as their impact may appear in the send on the 5th.

January 2023 - Email Geeks
Marketer view

Email marketer from Email Marketing Forum suggests that Gmail's promotional tab filtering might become more aggressive on certain dates due to algorithm updates. They recommend testing different subject lines and content formats to see if it improves placement in the primary inbox.

December 2023 - Email Marketing Forum

What the experts say
2Expert opinions

Drops in email engagement, particularly on a consistent basis like the 5th of each month, can be influenced by sudden unsubscriptions and changes in complaint patterns, indicating underlying deliverability issues. Proactive monitoring of list health and engagement metrics, utilizing tools such as Google Postmaster Tools and Microsoft SNDS, is crucial for identifying potential problems and maintaining deliverability. Failing to monitor list quality can lead to expected deliverability problems.

Key opinions

  • Sudden Unsubscriptions: A sudden spike in unsubscriptions can lead to a drop in engagement and potentially affect filtering by ISPs.
  • Complaint Patterns: Changes in the type, volume, or source of complaints can indicate deliverability issues.
  • Importance of Monitoring: Proactive monitoring of list health and engagement is crucial for identifying and addressing deliverability problems.
  • Consequences of Not Monitoring: Failure to monitor list quality and engagement can lead to expected deliverability issues.

Key considerations

  • Examine Hard and Soft Metrics: Analyze metrics from sending platforms, Google Postmaster Tools, and Microsoft SNDS to identify issues and support or refute hypotheses.
  • Proactive List Quality Monitoring: Implement processes to proactively monitor list quality and address potential problems before they impact deliverability.
  • Utilize Google Postmaster Tools: Use Google Postmaster Tools to gain insights into how Gmail is handling your email and identify potential issues.
Expert view

Expert from Word to the Wise addresses the importance of monitoring list health and engagement. She emphasizes the need to monitor list quality proactively and that you should use Google Postmaster Tools to get a sense of where your mail is landing. You should expect deliverability issues if you are not monitoring.

October 2021 - Word to the Wise
Expert view

Expert from Word to the Wise responds that sudden unsubscriptions could lead to a drop in engagement. She says that if the same types of complaints are present, the volume increases significantly, or the source of complaints changes, it may affect filtering at ISPs and inbox providers. She suggests you should examine both the hard and soft metrics that are available from your sending platform, Google Postmaster Tools or Microsoft SNDS, to see if the metrics support the hypothesis or point you in a different direction.

September 2023 - Word to the Wise

What the documentation says
5Technical articles

Maintaining a positive sender reputation is crucial for email deliverability, especially with Gmail. Sudden engagement drops can negatively impact this reputation, leading to further filtering. Adhering to Gmail's bulk sender guidelines, implementing DMARC for email authentication, monitoring IP reputation, and avoiding blocklists are essential. Microsoft's SmartScreen Filter also plays a role, emphasizing the importance of proactive reputation management and participation in sender programs.

Key findings

  • Sender Reputation Critical: A good sender reputation is critical for Gmail placement; drops in engagement negatively impact it.
  • DMARC Importance: DMARC helps prevent spoofing/phishing and improves deliverability by building a positive sender reputation.
  • Gmail Guidelines: Adherence to Gmail's bulk sender guidelines prevents filtering or blocking.
  • IP Reputation: Maintaining a good IP reputation is crucial; being blacklisted significantly impacts deliverability.
  • SmartScreen Filter: Microsoft's SmartScreen Filter protects users, highlighting the need for reputation monitoring.

Key considerations

  • Monitor Sender Reputation: Actively monitor sender reputation metrics within Google Postmaster Tools.
  • Implement DMARC: Implement DMARC with SPF and DKIM for email authentication to protect from spoofing.
  • Adhere to Guidelines: Review and comply with Gmail's bulk sender requirements.
  • IP Reputation Monitoring: Monitor IP reputation and address issues to avoid being blacklisted by services like Spamhaus.
  • Engage with SNDS: Enroll in Microsoft's SNDS and monitor your domain's reputation.
Technical article

Documentation from Google Postmaster Tools Help explains that maintaining a good sender reputation is critical for Gmail placement. Sudden drops in engagement can negatively impact reputation, leading to further filtering. They advise monitoring sender reputation metrics within Postmaster Tools to identify potential issues.

August 2023 - Google Postmaster Tools Help
Technical article

Documentation from Microsoft explains that SmartScreen Filter is a reputation-based technology designed to protect users from phishing scams and malicious websites. It's important to monitor your domain's reputation and enroll in sender programs (like Microsoft's SNDS) to proactively address any deliverability issues.

November 2024 - Microsoft
Technical article

Documentation from RFC explains that DMARC (Domain-based Message Authentication, Reporting & Conformance) is an email authentication protocol that allows senders to indicate that their emails are protected by SPF and DKIM, and tells receivers what to do if neither of those authentication methods passes – such as junk or reject the message. DMARC helps prevent email spoofing and phishing, and helps improve email deliverability and placement by building a positive sender reputation.

May 2024 - RFC 6376
Technical article

Documentation from Spamhaus explains that maintaining a good IP reputation is crucial for email deliverability. Being listed on a Spamhaus blocklist can significantly impact your ability to reach inboxes. It's essential to monitor your IP reputation and promptly address any issues that could lead to blacklisting.

January 2023 - Spamhaus
Technical article

Documentation from Gmail Help explains that Gmail has specific guidelines for bulk senders. Failure to adhere to these guidelines can result in filtering or blocking. This documentation advises reviewing and complying with Gmail's bulk sender requirements, including proper authentication and list management practices.

April 2024 - Gmail Help