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How to resolve Microsoft deliverability issues during IP warm up after being blocked?

Summary

Resolving Microsoft deliverability issues during IP warm-up after being blocked involves a comprehensive approach that combines proactive communication with Microsoft support, meticulous list management, adherence to email authentication standards, and continuous monitoring of sender reputation. Engaging with Microsoft involves submitting tickets, escalating issues beyond automated responses, and providing detailed information about sending practices. Maintaining a clean email list, gradually increasing sending volume, and segmenting audiences are crucial for establishing a positive reputation. Implementing SPF, DKIM, and DMARC authentication protocols, utilizing Microsoft's SNDS and JMRP, and considering pre-emptive accommodation requests are also essential steps. Monitoring sender reputation, responding to bounce messages, and potentially requesting users to add the sender to their safe senders list further contribute to improving deliverability to Microsoft.

Key findings

  • Active Microsoft Support Engagement: Engaging with Microsoft's support channel beyond automated responses is key to resolving deliverability issues.
  • Proactive Communication: Requesting pre-emptive accommodation from Microsoft can prevent blocking during IP warm-up.
  • Email Authentication is Crucial: Implementing and maintaining SPF, DKIM, and DMARC is critical for establishing legitimacy and trust with Microsoft.
  • Sender Reputation Monitoring is Essential: Continuously monitoring sender reputation and utilizing SNDS and JMRP tools are important for identifying and addressing issues.
  • List Hygiene and Segmentation are Key: Maintaining a clean and segmented email list improves engagement and reduces spam complaints.

Key considerations

  • Escalating Support Tickets: Be prepared to escalate support tickets with Microsoft beyond the initial automated responses and present your case clearly with supporting data.
  • Delisting Procedures: Follow the Microsoft delisting portal's instructions meticulously and provide detailed information about your sending practices.
  • Warm-up Strategies: Gradually increase sending volume, starting with highly engaged recipients, to establish a positive sender reputation.
  • Dedicated IP Address: Using a dedicated IP address can provide more control over sender reputation.
  • SNDS and JMRP Data Interpretation: Understanding and acting on the data provided by SNDS and JMRP is crucial for addressing deliverability issues proactively.

What email marketers say

12 marketer opinions

Resolving Microsoft deliverability issues during IP warm-up after being blocked involves a multi-faceted approach. Key strategies include actively engaging with Microsoft's support channels by submitting and escalating tickets, providing detailed information about the IP warming process and anticipated traffic. Maintaining a clean and engaged email list through practices like removing inactive subscribers, using double opt-in, and segmentation is critical. Email authentication (SPF, DKIM, DMARC), consistent sending volume, and monitoring sender reputation are also essential. Additionally, leveraging Microsoft's Smart Network Data Services (SNDS) and considering tactics like asking recipients to add the sender to their safe sender list can improve deliverability.

Key opinions

  • Microsoft Support Engagement: Direct and persistent engagement with Microsoft's support team is crucial, including escalating initial automated responses.
  • List Hygiene: Maintaining a clean and engaged email list significantly improves deliverability.
  • Gradual Warm-up: Gradually increasing sending volume and frequency is vital during IP warming to avoid triggering spam filters.
  • Email Authentication: Implementing SPF, DKIM, and DMARC is essential for email authentication and improved deliverability.
  • Sender Reputation Monitoring: Actively monitoring sender reputation and promptly addressing issues can prevent further blocks.

Key considerations

  • Ticket Escalation: Be prepared to escalate support tickets with Microsoft beyond the initial automated responses to reach a resolution.
  • Delisting Portals: Utilize Microsoft's delisting portal, but ensure you provide detailed information about your sending practices.
  • User Engagement: Prioritize sending to engaged users initially to establish a positive sender reputation.
  • Bounce Monitoring: Monitor bounce rates and immediately remove hard bounces from your list to maintain list hygiene.
  • Dedicated IP: Consider using a dedicated IP address during IP warm-up to control your sender reputation.

Marketer view

Email marketer from SendGrid emphasizes the importance of sending consistent volume and frequency. A sudden increase in sending volume can trigger spam filters, especially during the initial IP warm-up phase. The article advises a gradual ramp-up based on list size and engagement.

12 Jan 2022 - SendGrid

Marketer view

Email marketer from Email Geeks recommends reaching out to Microsoft via their support channel, even if the bounce message indicates a different issue, as they have seen cases where Microsoft lifted blocks after initial rejection.

17 May 2024 - Email Geeks

What the experts say

4 expert opinions

Resolving Microsoft deliverability issues during IP warm-up involves understanding and navigating Microsoft's support processes, including responding to initial 'no problem found' replies and effectively communicating facts and desired actions. Proactively requesting accommodation and utilizing Microsoft's SNDS tool are also crucial for monitoring and addressing reputation issues.

Key opinions

  • Persistence with Support: Replying to Microsoft's initial responses, even if negative, can lead to resolution.
  • Communication Style: Focusing on factual information and desired actions is more effective than engaging in subjective arguments with Microsoft support.
  • Proactive Accommodation: Requesting pre-emptive accommodation from Microsoft for new IPs or significant changes can prevent blocks.
  • SNDS Monitoring: Utilizing Microsoft's SNDS tool is critical for identifying and addressing reputation issues affecting deliverability.

Key considerations

  • Interacting with Automated Responses: Understand that Microsoft's initial responses may be automated and require further engagement.
  • Crafting Accommodation Requests: When requesting accommodation, clearly explain your sending practices, authentication methods, and commitment to best practices.
  • Understanding SNDS Data: Regularly review SNDS data, focusing on complaint rates, spam trap hits, and other key metrics, to identify and resolve deliverability issues.

Expert view

Expert from Word to the Wise highlights the importance of utilizing Microsoft's SNDS tool to monitor your IP's reputation and identify potential issues affecting deliverability. The article emphasizes the value of regularly reviewing SNDS data to understand complaint rates, spam trap hits, and other metrics that can help troubleshoot and resolve deliverability problems during IP warming.

31 Mar 2023 - Word to the Wise

Expert view

Expert from Email Geeks shares that responding to the initial "we can’t find any problem" response from Microsoft often leads to a resolution, even if they initially claim there is no issue.

3 Aug 2021 - Email Geeks

What the documentation says

4 technical articles

Resolving Microsoft deliverability issues during IP warm-up after being blocked, as per official documentation, requires a multi-pronged approach. Senders should utilize the Outlook.com delisting portal and adhere to email best practices, including implementing proper email authentication (SPF, DKIM, DMARC) and maintaining low complaint rates. Monitoring IP reputation through Microsoft's Smart Network Data Services (SNDS) and using the Junk Email Reporting Program (JMRP) are also crucial. Additionally, senders should be aware of general bulk sending guidelines, such as enabling DMARC, maintaining low spam rates, and providing easy unsubscribe options, per Google and Yahoo's new requirements.

Key findings

  • Delisting Portal: The Outlook.com delisting portal is a primary resource for addressing IP blocks.
  • Authentication Protocols: Proper email authentication (SPF, DKIM, DMARC) is essential for demonstrating legitimacy.
  • SNDS and JMRP Utilization: Microsoft's SNDS and JMRP provide valuable data for monitoring and addressing deliverability issues.
  • Bulk Sender Guidelines: Staying informed and compliant with general bulk sender guidelines (e.g., DMARC, low spam rates) is critical for avoiding blocks.

Key considerations

  • Portal Usage: Promptly use the Outlook.com delisting portal upon IP blockage.
  • Authentication Implementation: Ensure SPF, DKIM, and DMARC are correctly configured for your sending domain.
  • Regular Monitoring: Regularly monitor SNDS data and JMRP reports to identify and address potential issues proactively.
  • Compliance Adherence: Stay up-to-date with evolving bulk sender guidelines and adapt your practices accordingly.

Technical article

Documentation from Microsoft details the use of Microsoft's Smart Network Data Services (SNDS) to monitor the health and reputation of your sending IPs. The document covers how to use the data provided by SNDS to identify potential issues and improve email delivery rates.

5 Apr 2024 - Microsoft

Technical article

Documentation from SparkPost emphasizes the necessity of using Microsoft's Smart Network Data Services (SNDS) and the Junk Email Reporting Program (JMRP). SNDS provides data on your IP's reputation, while JMRP allows you to receive reports when users mark your emails as spam.

7 Apr 2024 - SparkPost

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