Why is Mailchimp client seeing sudden Gmail spam placement issues, and are other Mailchimp senders similarly affected?

Summary

A Mailchimp client experiencing sudden Gmail spam placement issues could stem from various interconnected factors. A potential Gmail-specific issue affecting multiple Mailchimp users might be recurring. More generally, the problem often arises from issues impacting sender reputation (influenced by shared IPs and other users' behavior), inadequate email authentication (SPF, DKIM, DMARC misconfiguration or absence), problematic email content (spam trigger words, poor HTML), poor list hygiene (inactive subscribers, spam traps), and decreased email engagement. External factors like AdWords strikes, potential IP pool changes, and even separate Outlook placements need investigation. Using Google Postmaster Tools to monitor metrics is crucial, and directly contacting Mailchimp support for platform-related problems is advised.

Key findings

  • Gmail Recurring Issue: There might be a recurring Gmail-specific issue affecting Mailchimp senders.
  • Shared IP Risk: Using shared IPs (common in Mailchimp) makes your reputation dependent on other users' practices.
  • Authentication is Key: Properly configured SPF, DKIM, and DMARC are critical for email authentication and deliverability.
  • List Hygiene Matters: Regularly cleaning your email list is crucial for maintaining a good sender reputation.
  • Engagement Counts: High engagement rates (opens, clicks) signal to ISPs that your emails are valuable.
  • Content is Important: Carefully review email content for spam triggers, high image-to-text ratios, and coding issues.
  • Outlook Issues Possible: Spam folder placement can affect Outlook too.

Key considerations

  • Investigate Gmail Issue: Determine if the problem is isolated to one client or a more widespread issue with Mailchimp and Gmail (reach out to Mailchimp Support).
  • Monitor Sender Reputation: Regularly monitor IP and domain reputation using tools like Google Postmaster Tools.
  • Check Authentication Setup: Verify the proper configuration of SPF, DKIM, and DMARC records.
  • Clean Email List: Implement a rigorous process to remove inactive subscribers and spam traps.
  • Enhance Engagement: Focus on strategies to improve email engagement (personalization, segmentation, relevant offers).
  • Review Email Content: Carefully examine email content for spam triggers and formatting issues.
  • Check Search Console/AdWords: Check for any strikes or errors with Google Search Console and AdWords for deliverability issues.
  • Investigate IP Pools: Determine if the client was moved into a different IP pool within Mailchimp.

What email marketers say
11Marketer opinions

A Mailchimp client experiencing sudden Gmail spam placement issues could be facing a multitude of factors. These include issues with sender reputation (affected by shared IP addresses and the sending habits of others on those IPs), authentication problems (SPF, DKIM, DMARC setup), changes in email content triggering spam filters (suspicious words, poor HTML), list hygiene issues (inactive subscribers, spam traps), and a drop in email engagement. It's also worth checking Google Search Console for errors, recent AdWords strikes, and potentially contacting Mailchimp support if a platform issue is suspected. Deliverability issues can also arise from Outlook placements.

Key opinions

  • Sender Reputation: A poor sender reputation, whether due to shared IP issues or internal sending habits, is a primary cause of spam placement.
  • Authentication: Incorrect or missing email authentication (SPF, DKIM, DMARC) can lead to deliverability problems.
  • Content Triggers: Changes in email content, like the use of spam trigger words or poor HTML coding, can activate spam filters.
  • List Hygiene: Inactive subscribers and spam traps on the email list can negatively impact sender reputation and deliverability.
  • Engagement: Low email engagement rates signal to ISPs that emails are not valuable, contributing to spam placement.
  • Shared IPs: Mailchimp relies on shared IPs therefore other users can affect overall deliverability.

Key considerations

  • IP Type: Determine whether the client is using dedicated or shared IPs, as shared IPs are more susceptible to reputation issues caused by other users.
  • Authentication Setup: Verify the correct setup and configuration of SPF, DKIM, and DMARC records for the sending domain.
  • Content Review: Review email content for spam trigger words, excessive images, and poor HTML coding practices.
  • List Cleaning: Implement a regular list cleaning process to remove inactive subscribers and spam traps.
  • Engagement Strategy: Focus on strategies to improve email engagement, such as personalization, segmentation, and relevant offers.
  • Google Postmaster Tools: Utilize Google Postmaster Tools to monitor sender reputation and identify potential deliverability issues with Gmail.
  • Contact Mailchimp Support: Reach out to Mailchimp support to investigate potential platform-wide issues.
  • Search Console & AdWords: Check Google Search Console errors and AdWords for issues with Gmail.
Marketer view

Email marketer from SendPulse responds that improving email deliverability involves warming up your IP address, using double opt-in, segmenting your list, cleaning your list regularly, avoiding spam trigger words, and monitoring your sender reputation.

February 2024 - SendPulse
Marketer view

Email marketer from Email on Acid shares that regularly cleaning your email list removes inactive subscribers and reduces the risk of sending to spam traps. This helps maintain a good sender reputation and improves deliverability.

March 2024 - Email on Acid
Marketer view

Email marketer from Gmass shares a number of factors can cause email to land in the spam folder, including, sending high volumes of emails without proper authentication, not cleaning your list, and having low engagement rates.

February 2022 - Gmass
Marketer view

Email marketer from Mailchimp Support shares that spam filters consider various factors, like suspicious words, poor HTML coding, high image-to-text ratio and authentication issues. Sudden changes in email content or sending practices could trigger these filters.

April 2024 - Mailchimp
Marketer view

Email marketer from Neil Patel Digital explains that several factors can impact email deliverability on Mailchimp, including sender reputation, authentication (SPF, DKIM, DMARC), content quality, and list hygiene. Sudden drops often indicate a change in one or more of these areas.

November 2023 - Neil Patel Digital
Marketer view

Email marketer from Reddit shares that they experienced similar issues with Mailchimp and Gmail. They found that the problem was related to a sudden increase in inactive subscribers on their list, which negatively impacted their sender reputation.

June 2022 - Reddit
Marketer view

Marketer from Email Geeks suggests checking Search Console errors and any recent changes/strikes with AdWords for Gmail issues. If the problem is suspected to be a platform issue, he advises contacting Mailchimp directly.

March 2022 - Email Geeks
Marketer view

Email marketer from Litmus shares that improving email engagement can be achieved by personalizing content, segmenting lists, and sending relevant offers. Higher engagement rates signal to ISPs that your emails are valuable, which can improve deliverability.

January 2024 - Litmus
Marketer view

Marketer from Email Geeks asks if the client is using dedicated or shared IPs and suggests the possibility of the client being moved to different pools.

April 2023 - Email Geeks
Marketer view

Email marketer from Stack Overflow community shares that if a Mailchimp user's shared IP address develops a bad reputation because of other user sending habits, it can affect overall deliverability for users using that shared IP.

June 2021 - Stack Overflow
Marketer view

Marketer from Email Geeks mentions noticing a large portion of Outlook spam placements for one specific client.

September 2021 - Email Geeks

What the experts say
4Expert opinions

A Mailchimp client experiencing sudden Gmail spam placement issues could be due to a recurrence of a past Gmail-specific problem affecting multiple Mailchimp users. However, several other factors influence Gmail's spam filters, including sender reputation (IP and domain), user engagement (opens, clicks, spam complaints), and email content. Shared IP addresses within Mailchimp mean your sending reputation can be affected by the actions of other users, and maintaining a good sender reputation through consistent volume, low complaint rates, and proper authentication is critical for avoiding spam filters.

Key opinions

  • Gmail-Specific Issue: There's a possibility of a recurring Gmail-specific problem affecting Mailchimp senders.
  • Sender Reputation Matters: A good sender reputation (IP and domain) is critical for deliverability.
  • User Engagement is Key: User engagement metrics like opens, clicks, and spam complaints directly influence spam placement.
  • Content Matters: Email content influences spam filtering; avoid problematic content to improve deliverability.
  • Shared IPs Can Hurt: Shared IP addresses (common in Mailchimp) mean that other users' actions impact your deliverability.

Key considerations

  • Investigate Gmail Issue: Determine if the Gmail spam placement is isolated to one client or a more widespread issue with Mailchimp and Gmail.
  • Monitor Sender Reputation: Check IP and domain reputation using tools like Google Postmaster Tools.
  • Analyze Engagement: Assess user engagement metrics (opens, clicks, complaints) for recent changes.
  • Review Email Content: Carefully examine email content for spam triggers and ensure proper formatting.
  • Consider Dedicated IP: If deliverability issues persist, consider using a dedicated IP address (if possible with Mailchimp's plan) to isolate sender reputation.
  • Authentication is Vital: Ensure correct SPF, DKIM and DMARC setup.
Expert view

Expert from Spam Resource explains that Gmail's spam filters are influenced by numerous factors, including sender reputation (IP and domain), user engagement (opens, clicks, spam complaints), and the content of the email. A sudden drop in engagement or a spike in complaints can quickly lead to spam placement.

November 2022 - Spam Resource
Expert view

Expert from Spam Resource shares that when using shared IP addresses through services like Mailchimp, your sending reputation is intertwined with other users on that IP. The bad behavior of others can negatively affect your deliverability. A sudden shift could indicate a neighbor on your shared IP is triggering spam filters.

June 2024 - Spam Resource
Expert view

Expert from Email Geeks clarifies that the issue is specifically with Gmail and suspects it might be a recurrence of a previous issue where Gmail was spam foldering mail from multiple Mailchimp clients. He has found another similarly affected client.

November 2022 - Email Geeks
Expert view

Expert from Word to the Wise explains that maintaining a good sender reputation is critical for deliverability. Factors like consistent sending volume, low complaint rates, and proper authentication practices all contribute to a positive reputation, which can help avoid spam placement.

November 2024 - Word to the Wise

What the documentation says
4Technical articles

Sudden Gmail spam placement issues for a Mailchimp client can be investigated using Google Postmaster Tools to monitor sending reputation, spam rate, and feedback loops. Crucial to preventing these issues is ensuring proper email authentication through SPF and DMARC. SPF prevents spammers from forging 'From' addresses, while DMARC builds on SPF and DKIM to provide a policy for handling messages failing authentication checks, thus improving deliverability and protecting against spoofing. Properly authenticating your domain with SPF and DKIM in Mailchimp is essential to verify your identity to email providers.

Key findings

  • Postmaster Tools: Google Postmaster Tools are useful for monitoring sender reputation and identifying deliverability issues.
  • SPF Authentication: SPF is crucial for preventing spammers from using forged 'From' addresses and improving deliverability.
  • DMARC Authentication: DMARC builds upon SPF and DKIM to specify how receivers should handle authentication failures, enhancing deliverability and security.
  • Authentication is Key: Properly authenticating your domain with SPF and DKIM in Mailchimp is essential for verifying your identity.

Key considerations

  • Implement Postmaster Tools Monitoring: Regularly monitor Google Postmaster Tools for any changes in sending reputation, spam rate, or feedback loops.
  • Verify SPF Configuration: Ensure that the SPF record is correctly configured for Mailchimp to authorize its servers to send emails on behalf of your domain.
  • Implement DMARC Policy: Implement a DMARC policy to instruct email receivers on how to handle messages that fail SPF and DKIM checks, helping to prevent spoofing.
  • Authenticate Domain: Follow Mailchimp's instructions to authenticate your sending domain using SPF and DKIM to improve deliverability.
Technical article

Documentation from Google explains that Google Postmaster Tools provides data about your sending reputation, spam rate, and feedback loop. Monitoring these metrics can help identify deliverability issues, including sudden Gmail spam placement problems.

October 2023 - Google
Technical article

Documentation from RFC Editor explains that SPF is an email authentication method that helps prevent spammers from sending messages with forged 'From' addresses at your domain. Ensuring your SPF record is correctly configured for Mailchimp is crucial for deliverability.

August 2023 - RFC Editor
Technical article

Documentation from dmarc.org explains that DMARC builds on SPF and DKIM to provide a policy for how email receivers should handle messages that fail authentication checks. Implementing DMARC can improve deliverability and protect your domain from spoofing.

August 2022 - dmarc.org
Technical article

Documentation from Mailchimp answers that to ensure emails are properly authenticated you should authenticate your domain, using SPF and DKIM, which verify your identity to email providers. This can improve deliverability and prevent spoofing.

January 2023 - Mailchimp