Why is SNDS reporting all green IPs with no delivery uplift?
Summary
What email marketers say12Marketer opinions
Email marketer from EmailonAcid recommends testing your emails across different email clients and devices to identify any rendering issues or spam trigger words that could negatively impact deliverability, despite a good IP.
Email marketer from SendGrid recommends even if your IPs are clear to ensure your emails are designed well with clear CTAs and easy to read text.
Email marketer from Gmass shares that if you're seeing green IPs and still poor delivery metrics, focus on segmenting and targeting engaged users. Sending to unengaged users increases your spam complaint rate and impacts your sender reputation even with a good IP.
Email marketer from email.geeks.chat shares that a green IP in SNDS only means Microsoft isn't seeing any immediate red flags from your IP. Content, sender reputation, and user engagement are equally important for inbox placement.
Email marketer from Email Geeks working for an ESP shares they are noticing all green IPs for about a week, before which they had seen at least one customer IP in yellow almost every day, suggesting Microsoft might have made a change.
Email marketer from Email Geeks confirms every IP is green and thinks that IPs having issues are not displayed in the SNDS data altogether, at least that is their impression from the last week or so.
Email marketer from Reddit explains that even with a green IP, poor list hygiene, irrelevant content, or low engagement can significantly impact deliverability, leading to emails landing in spam folders despite a good IP reputation.
Email marketer from Email Geeks saw a spike in nearly all green IPs (>99.9%) starting December 9, it has not abated and the SNDS FAQ filter color definitions remain the same. They haven't seen this mass filter color change correspond to any uplift in delivery or inboxing/engagement.
Email marketer from Mail সেন্ডার suggests even if your IPs are green it does not mean your emails will land in the inbox. Content should be checked against spam filters, and sender reputation from other areas might be hindering your mail.
Email marketer from Litmus shares that even with a green IP, emails that aren't mobile-optimized can result in poor user experience, leading to increased deletion and spam reports which hurt future deliverability.
Email marketer from StackOverflow recommends checking if your IP address or domain is listed on any public blacklists, as this can override a positive SNDS status and significantly impact deliverability.
Email marketer from Mailjet highlights that proper email authentication (SPF, DKIM, DMARC) is essential for establishing trust with mailbox providers. Even with a clean IP, failing authentication checks can hurt deliverability.
What the experts say8Expert opinions
Expert from Spam Resource explains that a green status in SNDS doesn't guarantee inbox placement. It simply means Microsoft isn't seeing any policy violations or technical issues originating from your IP address *at that moment*. Other factors like content, list quality, and sender reputation heavily influence actual delivery.
Expert from Email Geeks mentions a client with all green IPs was blocked at Microsoft the entire time, suggesting SNDS color may not reflect actual filtering status.
Expert from Word to the Wise highlights that SNDS data provides a limited view of your overall sender reputation and provides a starting point for analysis. A green IP can be misleading if you're not also monitoring other key metrics like engagement rates, spam trap hits, and blacklist listings. Focus on building a positive sender reputation across all channels, not just relying on SNDS for validation.
Expert from Word to the Wise shares a core consideration to be whether or not your sending habits look like a spammers – not properly authenticating email, sending email to bad addresses, not offering one-click unsubscribe options, and not processing unsubscribes in a timely manner can all have a negative impact on your deliverability, even if your IPs are green.
Expert from Email Geeks shares she has heard through the grapevine that Microsoft is looking at improving SNDS reporting, but believes the colors are still a lie, but maybe a little less of a lie.
Expert from Spam Resource explains it’s important to remember that SNDS is primarily a feedback loop about complaints. The data is meant to show you issues related to your mailing practices that are triggering user complaints, but a 'clean' SNDS report doesn’t automatically equate to perfect inboxing. Poor list hygiene, sending irrelevant content, or simply sending too frequently can cause users to mark messages as junk, even if your infrastructure is properly configured and your IP has a green status. This negative feedback then influences filtering decisions regardless of SNDS.
Expert from Email Geeks concludes that the SNDS colors are still a lie based on the conversation.
Expert from Email Geeks says they seem to have an IP in SNDS where yesterday is yellow and all previous days are green, and looking at another ESP’s IPs, they do see some with a mix of yellow and green over the past week, implying it is not everyone in the world going all green.
What the documentation says4Technical articles
Documentation from RFC explains that SMTP standards require adherence to specific formatting and protocol guidelines. Deviation from these standards can lead to deliverability issues even with a clean IP.
Documentation from Microsoft explains that a green status in SNDS indicates that your IP address is not currently exhibiting any problems that would trigger filtering. However, it does not guarantee inbox placement, as other factors like content and engagement also play a role.
Documentation from SparkPost explains that sender reputation, encompassing IP reputation but also domain reputation, authentication practices, and engagement metrics, is crucial for deliverability. A green IP is just one piece of the puzzle.
Documentation from Google Postmaster Tools outlines best practices for sending emails to Gmail users, emphasizing the importance of consistent sending volumes, low spam complaint rates, and properly configured authentication records, even with a good IP reputation.