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Why are my Salesforce Marketing Cloud emails going to spam after switching to a private domain and what can I do to fix it?

Summary

After switching to a private domain in Salesforce Marketing Cloud, emails may land in spam due to a multitude of reasons. Common culprits include improper domain authentication (SPF, DKIM, DMARC), lack of IP warming, damaged sender reputation, poor list hygiene, low subscriber engagement, content issues like spam trigger words, and sending frequency. Experts recommend reviewing Salesforce stats, testing Yahoo/Google compliance, and conducting inbox testing. Maintaining high-quality content, regularly cleaning the subscriber list, monitoring domain reputation through tools like Google Postmaster Tools, and establishing feedback loops are essential practices. Proper domain warming and authentication setup are critical when transitioning to a private domain. Deliverability services and consultants can help address and remediate these issues.

Key findings

  • Authentication: Correct SPF, DKIM, and DMARC configuration is essential to prevent emails from being flagged as spam, especially after a domain change.
  • Domain Warming: A gradual IP warming process is crucial for establishing a positive sending reputation with ISPs when introducing a new private domain.
  • Reputation: Switching to a private domain without proper setup and warming can severely damage your sending reputation.
  • Engagement: Low subscriber engagement (low open rates, click-through rates) signals to ISPs that emails may be unwanted.
  • List Hygiene: Regularly removing inactive or unengaged subscribers improves sender reputation and engagement rates.
  • Content Quality: High-quality content, free from spam trigger words, and proper HTML formatting are vital for avoiding spam filters.

Key considerations

  • Salesforce Stats: Review Salesforce stats to identify domain-specific issues impacting deliverability.
  • Compliance Testing: Test Yahoo/Google compliance using tools like AboutMyEmail.
  • Authentication Package: Ensure the Sender Authentication Package (SAP) in Salesforce Marketing Cloud is fully compliant.
  • Inbox Testing: Conduct inbox testing with tools like Inbox Monster or Glockapps.
  • Google Postmaster Tools: Monitor domain reputation using Google Postmaster Tools.
  • Feedback Loops: Set up feedback loops with major ISPs to manage spam complaints.
  • Deliverability Services: Consider using deliverability services like Inbox Monster or hiring a consultant for a comprehensive audit.
  • Email Testing: Utilize email testing tools, such as Litmus, to preview emails across different clients and identify potential deliverability issues before sending.

What email marketers say

11 marketer opinions

After switching to a private domain in Salesforce Marketing Cloud, emails may land in spam due to various factors. Common issues include improper domain authentication (SPF, DKIM, DMARC), lack of IP warming, poor list hygiene, low subscriber engagement, spam trigger words in content, sending emails too frequently, and being on blocklists. Monitoring domain reputation with tools like Google Postmaster Tools, setting up feedback loops, and using dedicated IPs can help identify and resolve deliverability problems. Verifying email addresses and working with deliverability services like Inbox Monster may also be beneficial.

Key opinions

  • Authentication: Ensure proper SPF, DKIM, and DMARC configuration for the private domain is essential for deliverability.
  • IP Warming: Gradually warm up the new private domain by sending to engaged subscribers first and increasing volume over time.
  • List Hygiene: Regularly remove inactive or unengaged subscribers to improve sender reputation.
  • Engagement: Monitor open rates, click-through rates, and complaint rates to identify deliverability issues.
  • Content: Avoid spam trigger words and ensure proper HTML formatting to prevent emails from being flagged as spam.
  • Frequency: Avoid sending too many emails in a short period to prevent subscriber fatigue and increased spam complaints.
  • Reputation: Monitor domain and IP reputation using Google Postmaster Tools and blocklist monitoring tools.

Key considerations

  • Google Postmaster Tools: Utilize Google Postmaster Tools to gain insights into domain reputation, spam rate, and authentication status.
  • Feedback Loops: Set up feedback loops with major ISPs to receive information about spam complaints and remove problematic subscribers.
  • Dedicated IPs: Consider using dedicated IPs to build your own reputation and maintain more control over deliverability.
  • Address Verification: Verify email addresses before sending to remove invalid or non-existent addresses from your list.
  • Blocklist Monitoring: Regularly check if your IPs or domains are included in any blocklists to quickly address any listing issues.
  • Deliverability Services: Consider using deliverability services like Inbox Monster to help address and remediate deliverability issues, including spam trap removal and DMARC RUA assistance.

Marketer view

Email marketer from DigitalMarketer advises against bombarding subscribers with too many emails. Find the right sending frequency for your audience and avoid sending too many emails in a short period. Excessive sending can lead to subscriber fatigue and increased spam complaints.

19 Feb 2025 - DigitalMarketer

Marketer view

Email marketer from EmailGeek Community Forum suggests checking your domain's reputation using Google Postmaster Tools. This provides insights into your spam rate, IP reputation, and authentication status, helping you identify potential issues affecting deliverability.

18 Oct 2024 - EmailGeek Community Forum

What the experts say

6 expert opinions

After switching to a private domain in Salesforce Marketing Cloud, emails may go to spam due to several factors, including inadequate domain warming, authentication issues (SPF, DKIM, DMARC), damaged sender reputation, and low subscriber engagement. Domain warming is crucial for establishing a positive reputation with ISPs, especially after a domain change. Proper authentication prevents ISPs from flagging emails as spam. Low engagement rates signal to ISPs that emails are unwanted, and list bombing attacks, even if not directly initiated, can lead to aggressive spam filtering. Monitoring reputation via tools like Google Postmaster Tools, reviewing Salesforce stats, and conducting deliverability audits are important steps to identify and resolve the issues.

Key opinions

  • Domain Warming: Switching to a private domain without proper warming can severely damage sender reputation and cause emails to land in spam.
  • Authentication: Incorrect or missing SPF, DKIM, and DMARC records can lead ISPs to flag emails as spam, particularly after a domain change.
  • Engagement: Low subscriber engagement (open rates, click-through rates) signals to ISPs that emails may be unwanted, affecting deliverability.
  • Reputation Damage: Improper domain setup and insufficient warming after switching to a private domain can lead to persistent reputation damage.
  • List Bombing: Even indirect impacts from list bombing attacks can lead to increased filtering and spam classification.

Key considerations

  • Salesforce Stats Review: Regularly review Salesforce stats to identify potential domain-specific issues impacting deliverability.
  • Compliance Testing: Test Yahoo/Google compliance using tools like AboutMyEmail to ensure adherence to current requirements.
  • SAP Configuration: Ensure Sender Authentication Package (SAP) in Salesforce Marketing Cloud is fully compliant and properly implemented.
  • Inbox Testing: Conduct inbox testing with tools like Inbox Monster or Glockapps to assess spam filter settings at major providers.
  • Deliverability Audit: Consider hiring a consultant to conduct a comprehensive deliverability audit to identify and address underlying issues.
  • Reputation Monitoring: Monitor your reputation through tools like Google Postmaster Tools to understand your spam rate and IP reputation.
  • List Hygiene: Focus on improving engagement by cleaning your list of unengaged subscribers and sending relevant content to a targeted audience.

Expert view

Expert from SpamResource emphasizes that switching to a private domain without proper setup and warming can severely damage your sending reputation. This reputation damage will persist even after fixing the initial issues, making it harder to regain inbox placement. Monitoring your reputation through tools like Google Postmaster Tools is crucial.

5 Jul 2023 - SpamResource

Expert view

Expert from Word to the Wise explains that list bombing is an attack where a large number of spam and subscription emails flood an email account. While you may not be a perpetrator, such attacks cause aggressive filtering by mail providers which can result in your email being misclassified as spam.

4 Nov 2023 - Word to the Wise

What the documentation says

4 technical articles

After switching to a private domain in Salesforce Marketing Cloud, deliverability issues leading to emails landing in spam are often attributed to improper domain authentication, inadequate IP warming, poor content quality, and low subscriber engagement. Salesforce documentation emphasizes the necessity of correctly configuring SPF, DKIM, and DMARC within the Sender Authentication Package (SAP) and recommends a gradual IP warming strategy. Maintaining high-quality content, a clean subscriber list, and thorough email testing across various clients are also critical for avoiding spam filters, as highlighted by both Salesforce and Litmus documentation.

Key findings

  • Authentication: Proper configuration of SPF, DKIM, and DMARC is crucial for successful email delivery.
  • IP Warming: A gradual IP warming process is essential when introducing a new private domain to build a positive sending reputation.
  • Content Quality: High-quality content, free from spam trigger words, and proper HTML formatting are vital for avoiding spam filters.
  • Subscriber Engagement: Maintaining a clean and engaged subscriber list improves sending reputation and deliverability.
  • Email Testing: Thorough email testing across various clients and devices helps identify and resolve potential deliverability issues.

Key considerations

  • SAP Configuration: Verify and correct the configuration of SPF, DKIM, and DMARC within Salesforce Marketing Cloud's Sender Authentication Package (SAP).
  • Warming Strategy: Implement a gradual IP warming strategy, starting with low volumes to engaged subscribers and progressively increasing sending volume.
  • Content Review: Regularly review email content to eliminate spam trigger words and ensure proper HTML formatting.
  • List Maintenance: Clean your subscriber list by removing unengaged or inactive recipients.
  • Testing Tools: Utilize email testing tools, such as Litmus, to preview emails across different clients and identify potential deliverability issues before sending.

Technical article

Documentation from Salesforce Help emphasizes the importance of high-quality content and subscriber engagement. Avoid spam trigger words, ensure proper HTML formatting, and maintain a clean and engaged subscriber list. Low engagement rates and frequent spam complaints negatively impact your sending reputation and deliverability.

13 Feb 2025 - Salesforce Help

Technical article

Documentation from Salesforce Help recommends a gradual IP warming process when introducing a new private domain, even within SFMC. Start with low volumes to engaged subscribers and gradually increase sending volume over several weeks to build a positive sending reputation with ISPs. Sudden large-volume sends from a new domain can trigger spam filters.

7 Aug 2022 - Salesforce Help

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