Multiple services offer alternatives to SenderScore for evaluating sender reputation. Some, like Talos Intelligence, IBM X-Force Exchange, and Kickbox, provide direct reputation scores on a 0-100 scale (or similar). Others, including ReturnPath, SparkPost, Validity, Mailgun, Google Postmaster Tools, and Microsoft SNDS, offer metrics and data that can be used to infer reputation. Insights from community sources, like Reddit and emailmarketing.org, highlight the existence of internal ESP scores and the importance of blacklist checking (MultiRBL.valli.org). GlockApps focuses on inbox placement testing. Spamhaus provides blocklist lookups, while Cisco Secure Email uses reputation filters. Mailtester.com might return misleading 'BS scores'. Overall, a combination of direct scores, inferred metrics, and proactive monitoring provides the best view.
12 marketer opinions
Several services offer alternatives to SenderScore for assessing sender reputation. Some, like Talos Intelligence, IBM X-Force Exchange, and Kickbox, provide explicit reputation scores. Others, like ReturnPath, SparkPost, Validity, Mailgun, and some ESPs, offer tools and metrics that can be used to infer reputation. Additionally, community insights from Reddit and emailmarketing.org forum highlight the use of internal ESP scores and blacklist checking services like MultiRBL.valli.org. GlockApps focuses on inbox placement testing, and services such as Mailtester.com can provide BS scores.
Marketer view
Email marketer from Reddit forum shares that some email service providers (ESPs) offer their own internal reputation scores to help users monitor their sending health.
12 Dec 2021 - Reddit
Marketer view
Email marketer from Talos Intelligence shares that they provide reputation scoring as part of their threat intelligence services, which can be used to assess sender reputation.
31 Oct 2023 - Talos Intelligence
3 expert opinions
The responses suggest a few alternatives for assessing sender reputation. Kickbox provides a 0-100 (or 0.000-1.000) score that's considered trustworthy. Grademyemail.co is mentioned but noted to measure something different than SenderScore. Word to the Wise emphasizes monitoring feedback loops and blocklist status for reputation insights, even though not directly providing a 0-100 score.
Expert view
Expert from Word to the Wise (Laura Atkins) discusses reputation monitoring services that can provide insights into sender reputation, although not specifically a 0-100 score. Suggests that actively monitoring feedback loops and blocklist status are crucial.
15 Nov 2021 - Word to the Wise
Expert view
Expert from Email Geeks suggests Grademyemail.co, but notes that it doesn't measure the same thing as SenderScore.
6 May 2025 - Email Geeks
4 technical articles
Google Postmaster Tools offers data to derive a reputation score, Microsoft SNDS provides data on IP addresses and complaint rates to gauge sender reputation, Spamhaus offers blocklists and reputation lookups, and Cisco Secure Email uses reputation filters. While only google allows you to derive a score, all provide data to understand deliverability with their systems.
Technical article
Documentation from Microsoft explains that the Smart Network Data Services (SNDS) provides data about your sending IP addresses, including complaint rates, which can be used to gauge your sender reputation with Microsoft services.
24 Feb 2025 - Microsoft
Technical article
Documentation from Spamhaus explains that they provide blocklists and reputation lookups which, while not a score, indicates if a sender is listed as a source of spam.
17 Aug 2022 - Spamhaus
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