Summary
While many sources, including official Microsoft documentation, widely state that a single SNDS account is limited to 20 IP addresses, there are some differing reports. Numerous email marketing experts confirm this 20-IP limit, noting that creating multiple SNDS accounts is necessary for managing a larger volume of IPs. Conversely, a few experienced marketers have reported managing significantly more IP addresses, with some accounts holding up to 1000, 3000, or even approximately 5000 IPs. These higher figures often come with explanations such as making specific request types or the tool explicitly notifying when a limit is reached, suggesting that while the documented limit is 20, practical usage scenarios or older system allowances might permit greater numbers under certain conditions.
Key findings
- Standard 20-IP Limit: The overwhelming consensus, supported by Microsoft's official documentation and numerous email marketing experts, is that a single SNDS account is limited to a maximum of 20 IP addresses.
- Reports of Higher Limits: Despite the standard limit, some experienced email marketers have reported managing significantly larger numbers of IPs, ranging from 1000 to approximately 5000, often implying the use of multiple accounts or specific technical configurations like one request per /24.
- In-tool Notifications: Some users note that the SNDS tool itself provides explicit notification when an account reaches its IP limit.
Key considerations
- Multiple Accounts: For organizations managing more than 20 IP addresses, the common approach is to create and utilize multiple SNDS accounts to monitor all necessary IPs.
- Official Sources: Users should always refer to the latest official Microsoft documentation for the most accurate and up-to-date information regarding SNDS IP limits and account management.
- Monitoring Strategy: When planning email infrastructure, the widely reported 20-IP limit per SNDS account should be considered to ensure comprehensive monitoring of all sending IPs.
What email marketers say
13 marketer opinions
The maximum number of IP addresses allowed on a single Microsoft SNDS (Smart Network Data Services) account is widely confirmed by numerous email marketing experts and major industry blogs to be 20. While some isolated experiences suggest that certain configurations or older systems might allow for more IPs, the standard and most frequently cited limit remains 20. This consistent feedback indicates that for organizations needing to monitor a larger number of sending IPs, the common practice is to establish multiple SNDS accounts.
Key opinions
- Consistent 20-IP Limit: Across various industry sources, including leading email marketing blogs and community discussions, the limit for IP addresses on a single SNDS account is consistently reported as 20.
- Multiple Accounts Required: When an organization needs to monitor more than 20 IP addresses, the standard advice is to create additional SNDS accounts, with each account accommodating up to 20 IPs.
- Rare Exceptions Noted: Although most experts confirm the 20-IP limit, a few experienced users have reported managing significantly higher numbers, sometimes in the thousands, possibly under specific technical configurations or older system allowances.
Key considerations
- Strategic Account Setup: To ensure comprehensive monitoring of all sending IPs, organizations should plan for multiple SNDS accounts if their IP infrastructure exceeds the 20-address limit.
- Adherence to Documented Limits: While anecdotal evidence of higher limits exists, it is prudent to adhere to the widely reported and officially suggested maximum of 20 IP addresses per SNDS account.
- Efficient IP Management: Understanding this per-account limit helps in efficiently organizing and managing IP addresses within the SNDS platform for optimal deliverability insights.
Marketer view
Email marketer from Email Geeks responds that they do not believe there is a limit, sharing their experience of having many more than 3000 IPs listed without issue, making 1 request per /24.
22 Oct 2021 - Email Geeks
Marketer view
Email marketer from Word to the Wise explains that SNDS accounts are limited to 20 IP addresses, requiring multiple accounts for more IPs.
15 Jan 2025 - Word to the Wise
What the experts say
2 expert opinions
Although a 20-IP limit per SNDS account is often cited, various email deliverability experts have reported managing significantly more IP addresses on a single account. Some sources indicate a limit believed to be around 1000 IPs, while another expert mentions a higher approximate limit of 5000 IPs, clarifying that the tool itself notifies users upon reaching this threshold. For entities with extensive IP infrastructures, the common practice involves establishing multiple SNDS accounts to accommodate a larger volume of monitored IP addresses.
Key opinions
- Higher Reported IP Limits: Some email deliverability experts report significantly higher IP limits for SNDS accounts than the commonly stated 20, with figures ranging from 1000 to around 5000 IP addresses per account.
- System Notification: The SNDS platform is designed to explicitly notify users when their account has reached its maximum allowable number of registered IP addresses.
- Multiple Account Strategy: Organizations with large numbers of sending IPs frequently employ multiple SNDS accounts to circumvent per-account limits and ensure comprehensive monitoring.
Key considerations
- Varying Reported Maximums: While the widely cited limit is 20 IPs, some experts suggest the practical maximum for a single SNDS account could range from 1000 to approximately 5000 IPs, indicating potential differences based on account specifics or system updates.
- Leveraging Multiple Accounts: For organizations managing extensive IP ranges, creating and utilizing multiple SNDS accounts remains a common and effective strategy to monitor all necessary IP addresses, regardless of the precise per-account limit.
- Monitoring In-Tool Alerts: Users should pay attention to explicit notifications within the SNDS tool itself, as it reportedly informs users when their account reaches its registered IP limit.
Expert view
Expert from Email Geeks explains that there is a limit of approximately 5000 IPs per SNDS account. She clarifies that the tool explicitly notifies users when this limit is reached and notes that some organizations use multiple SNDS accounts to manage a larger number of IPs.
19 Apr 2024 - Email Geeks
Expert view
Expert from Word to the Wise explains that SNDS has a limit on the number of IPs an account can register, which is believed to be 1000.
17 Mar 2024 - Word to the Wise
What the documentation says
3 technical articles
Official Microsoft documentation and direct confirmations from Microsoft representatives consistently state that a single Smart Network Data Services (SNDS) account has a firm limit of 20 IP addresses. This widely reported maximum is detailed across various Microsoft platforms, including learn.microsoft.com, the Microsoft Community, and the Microsoft Tech Community, providing clear guidance on the capacity of an SNDS account.
Key findings
- Confirmed 20-IP Limit: Microsoft's official documentation and statements from its representatives consistently confirm that a single SNDS account is limited to a maximum of 20 IP addresses.
- Consistent Across Sources: This 20-IP address limit is uniformly stated across various Microsoft platforms, including learn.microsoft.com, Microsoft Community, and Microsoft Tech Community.
Key considerations
- Account Capacity Planning: Users should plan their IP monitoring strategy keeping in mind the confirmed maximum of 20 IP addresses per SNDS account.
- Official Documentation Reliance: For the most current and accurate information on SNDS limits and features, always refer directly to official Microsoft documentation.
- Multiple Account Strategy: Should your organization manage more than 20 sending IP addresses, establishing multiple SNDS accounts will be necessary for comprehensive monitoring.
Technical article
Documentation from learn.microsoft.com explains that users can add up to 20 IP addresses to their SNDS account.
16 Feb 2022 - learn.microsoft.com
Technical article
Documentation from Microsoft Community, shared by a Microsoft Agent, confirms a limit of 20 IP addresses per SNDS account.
28 Sep 2024 - Microsoft Community
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