How important is IP reputation versus domain reputation, especially for B2B senders with low engagement and emails going to spam?

Summary

The overwhelming consensus from experts, marketers, and documentation emphasizes that for B2B senders grappling with low engagement and spam placement, domain reputation is paramount compared to IP reputation. Major mailbox providers such as Google and Microsoft prioritize domain reputation in their filtering processes. Improving domain reputation requires a multifaceted approach, including boosting user engagement through high-quality, relevant, and personalized content, practicing rigorous list hygiene and segmentation, proper email authentication using SPF, DKIM, and DMARC, monitoring domain reputation metrics, and adopting a conservative sending approach. Focusing on providing value to recipients and understanding the reasons for low engagement are also crucial steps.

Key findings

  • Domain Over IP: Domain reputation is significantly more crucial than IP reputation for B2B email deliverability.
  • Engagement is Critical: User engagement and behavior are key determinants of domain reputation.
  • Authentication is Essential: Proper email authentication (SPF, DKIM, DMARC) is essential for verifying legitimacy and improving domain reputation.
  • Enterprise Filtering: B2B emails are subject to strict filtering by enterprise-level solutions, making domain reputation even more important.
  • Volume Doesn't Equal Reputation: Simply sending a large volume of emails does not guarantee a good reputation; engagement and content quality are more important.

Key considerations

  • Prioritize Content: Focus on creating high-quality, relevant, and personalized content that engages recipients.
  • Maintain List Hygiene: Practice rigorous list hygiene by segmenting audiences and removing unengaged contacts.
  • Implement Authentication: Implement and correctly configure SPF, DKIM, and DMARC to authenticate your sending domain.
  • Monitor Reputation Metrics: Regularly monitor domain reputation metrics using tools like Google Postmaster Tools and Microsoft SNDS.
  • Adopt Conservative Sending Practices: Warm up your domain gradually and adopt a conservative sending approach to build a positive sending history.
  • Understand Engagement Issues: Identify and address the underlying reasons for low engagement rates.

What email marketers say
10Marketer opinions

For B2B senders struggling with low engagement and emails landing in spam, the prevailing consensus is that domain reputation is significantly more critical than IP reputation. Major mailbox providers like Gmail and Microsoft prioritize domain reputation when filtering emails, meaning a poor domain reputation can lead to emails landing in spam regardless of IP reputation. Improving domain reputation involves a multi-faceted approach, including focusing on user engagement, ensuring relevant and personalized content, practicing list hygiene and segmentation, properly authenticating emails (SPF, DKIM, DMARC), warming up your domain, and consistently monitoring domain reputation metrics.

Key opinions

  • Domain Reputation Priority: Domain reputation is generally considered more important than IP reputation for B2B email deliverability.
  • Engagement is Key: User engagement and behavior significantly impact domain reputation.
  • Authentication Matters: Proper email authentication (SPF, DKIM, DMARC) enhances domain reputation.
  • Enterprise Filters: B2B emails often face stricter filtering by enterprise-level solutions.
  • Low Engagement Impact: Low engagement rates can severely damage domain reputation and increase spam placement.

Key considerations

  • List Hygiene: Implement strong list hygiene practices, including segmentation and removal of unengaged contacts.
  • Content Relevance: Ensure email content is relevant, personalized, and provides value to recipients.
  • Domain Warm-up: Warm up your domain gradually by sending to engaged contacts before increasing volume.
  • Authentication Setup: Properly configure SPF, DKIM, and DMARC to verify the legitimacy of your emails.
  • Reputation Monitoring: Track domain reputation metrics (spam complaints, engagement) using tools like Google Postmaster Tools and Microsoft SNDS.
Marketer view

Email marketer from Reddit shares that domain reputation matters more than IP reputation in today's email ecosystem, particularly for B2B. They explain that building a strong domain reputation involves consistent sending habits, engaging content, and active list management to avoid spam traps and low engagement rates.

January 2023 - Reddit
Marketer view

Email marketer from Mailjet responds that for B2B senders struggling with low engagement and spam issues, focusing on list hygiene and segmentation is essential. Targeting the right audience and removing unengaged contacts can significantly improve domain reputation and deliverability.

April 2023 - Mailjet
Marketer view

Email marketer from Stack Overflow shares that domain reputation plays a significant role in B2B email deliverability due to the reliance on enterprise-level filtering solutions. They suggest improving domain reputation by ensuring emails are relevant, personalized, and sent with proper consent.

November 2021 - Stack Overflow
Marketer view

Email marketer from Neil Patel Digital emphasizes that domain reputation is more critical than IP reputation because major mailbox providers like Gmail and Microsoft heavily filter based on domain reputation. If a domain has a poor reputation, emails are more likely to land in the spam folder regardless of IP reputation.

March 2024 - Neil Patel Digital
Marketer view

Email marketer from Email on Acid explains that proper email authentication (SPF, DKIM, DMARC) significantly impacts domain reputation. Implementing these protocols helps verify the legitimacy of emails, making them less likely to be marked as spam by mailbox providers, especially for B2B senders.

February 2022 - Email on Acid
Marketer view

Email marketer from Litmus responds that tracking domain reputation metrics, such as spam complaints and engagement rates, is crucial for B2B senders to identify and address deliverability issues. They suggest using tools like Google Postmaster Tools and Microsoft SNDS to monitor domain reputation and make necessary adjustments to sending practices.

June 2021 - Litmus
Marketer view

Email marketer from Gmass explains that focusing on domain reputation is essential for cold email deliverability, especially for B2B senders. They suggest warming up your domain by sending emails to engaged contacts first and gradually increasing volume to build a positive sending history.

March 2024 - GMass
Marketer view

Email marketer from SendGrid shares that sender reputation (both IP and domain) is crucial for email deliverability, but suggests focusing on domain reputation first. For B2B senders, engaging content and consistent sending practices are vital to improve user engagement and domain reputation.

January 2022 - SendGrid
Marketer view

Marketer from Email Geeks explains that in B2B, emails go up against enterprise filtering solutions and that user engagement and behaviour is important.

September 2024 - Email Geeks
Marketer view

Email marketer from Woodpecker shares that personalized emails with relevant content are more likely to engage recipients and improve domain reputation. They suggest tailoring emails to individual recipients and providing valuable information to increase open rates and reduce spam complaints.

July 2022 - Woodpecker

What the experts say
6Expert opinions

Experts agree that for B2B senders with low engagement and emails going to spam, domain reputation is the primary concern, outweighing IP reputation. Focus should be placed on improving the mailstream reputation by ensuring recipients want the mail they receive. Key actions include enhancing content quality and relevance, and addressing the underlying reasons for low engagement. Resolving deliverability issues means getting emails out of the spam folder, and B2B senders should prioritize domain reputation, carefully check authentication settings, and adopt a conservative approach to sending frequency and volume.

Key opinions

  • Domain Reputation Focus: Domain reputation is more important than IP reputation, particularly for B2B.
  • Engagement Drives Deliverability: Deliverability issues are strongly linked to user engagement levels.
  • Content Relevance is Key: The mailstream reputation is determined by whether recipients want the emails.
  • Gmail Spam Folder a Red Flag: If emails consistently land in the Gmail spam folder, domain reputation is likely poor.

Key considerations

  • Improve Content Quality: Focus on creating high-quality, relevant content to boost engagement.
  • Address Engagement Issues: Identify and resolve the underlying reasons for low engagement rates.
  • Check Authentication Settings: Verify and optimize email authentication (SPF, DKIM, DMARC) to enhance domain reputation.
  • Adopt Conservative Sending: Be conservative in email sending frequency and volume to maintain a positive domain reputation.
  • Focus on Desired Mail: Prioritize sending emails that recipients genuinely want to receive.
Expert view

Expert from Spam Resource emphasizes that for B2B senders, domain reputation is crucial. With low engagement and spam placement, domain reputation is the priority. Check authentication and be conservative in what you send, and how often.

February 2023 - Spam Resource
Expert view

Expert from Email Geeks says the main thing is really about your mailstream reputation and if it is something people want.

March 2022 - Email Geeks
Expert view

Expert from Email Geeks explains that they don’t really worry about IP reputation at Google, as they are more focused on domain reputation, especially for low-volume senders. Also volume at other mailbox providers doesn't count and mail to google workspace domains doesn't count either.

December 2023 - Email Geeks
Expert view

Expert from Email Geeks says if your Gmail reputation is bad and your open rate is 0.3%, the most likely explanation is all that mail you're sending to Google is going to the spam folder and the first thing you need to do is get mail out of the spam folder.

November 2022 - Email Geeks
Expert view

Expert from Email Geeks says that while it depends on the filter, they haven't cared about IP reputation from an ESP in years, and instead focuses on making sure that the mail clients send is mail that the recipients want.

September 2023 - Email Geeks
Expert view

Expert from Word to the Wise explains that deliverability issues are often tied to engagement. If emails are going to spam and engagement is low, focusing on improving the quality of your email content and the relevance to your audience will improve your domain reputation. They suggest asking “why aren’t they engaging?” and resolving those issues.

November 2022 - Word to the Wise

What the documentation says
6Technical articles

Email service providers like Google, Microsoft, and Mimecast rely heavily on domain reputation for spam filtering, particularly impacting B2B senders with low engagement. Poor domain reputation, stemming from low open rates, high spam complaints, and bounce rates, increases the likelihood of emails being blocked or sent to spam folders. Implementing SPF and DMARC enhances authentication and protects domain reputation, while proper bounce handling and removing invalid addresses are crucial for maintaining a positive sender reputation.

Key findings

  • Domain Reputation Dominance: Major email providers prioritize domain reputation in spam filtering.
  • Engagement Matters: Low engagement directly hurts domain reputation.
  • Authentication is Key: SPF and DMARC improve authentication and protect against spoofing.
  • Bounce Rate Impact: High bounce rates negatively affect domain reputation.

Key considerations

  • Monitor Reputation: Actively monitor domain reputation using tools like Google Postmaster Tools and Microsoft SNDS.
  • Implement Authentication: Implement SPF and DMARC records to authenticate your sending domain.
  • Handle Bounces: Employ a robust bounce processing system to remove invalid addresses.
  • Boost Engagement: Improve email content and targeting to increase user engagement.
Technical article

Documentation from RFC specifies that implementing SPF records helps to authenticate the sending domain. This assures mailbox providers that the emails are legitimately from the domain, which improves domain reputation and reduces the likelihood of emails being marked as spam.

June 2022 - RFC
Technical article

Documentation from DMARC.org states that implementing a DMARC policy helps protect your domain from email spoofing and phishing attacks. This protects the reputation of your domain as mailbox providers know mail coming from your domain is legitimate and that spoofed emails are blocked.

October 2024 - DMARC.org
Technical article

Documentation from Google states that domain reputation is a key factor in Gmail's spam filtering. Low engagement rates (low open rates, high spam complaints) negatively impact domain reputation, leading to increased spam placement, especially for B2B senders who may not have strong user interaction.

April 2021 - Google
Technical article

Documentation from Mimecast highlights that domain reputation is a key factor in their email filtering process. Domains with poor engagement rates, high bounce rates, or frequent spam complaints are more likely to have their emails blocked or sent to spam folders. Mimecast recommend monitoring your domain on their reputation checker.

November 2023 - Mimecast
Technical article

Documentation from SparkPost states that proper bounce handling is crucial for maintaining domain reputation. They explain that high bounce rates can negatively impact domain reputation, leading to increased spam placement. Senders should implement a robust bounce processing system to remove invalid email addresses from their lists.

May 2023 - SparkPost
Technical article

Documentation from Microsoft explains that Exchange Online Protection (EOP) uses a combination of IP and domain reputation to filter spam. Domain reputation is heavily weighted, especially for senders with low engagement. Senders should monitor their domain reputation via Microsoft's SNDS program.

March 2024 - Microsoft