That distinction is important.<\/p>\n
This guide explains what Sender Score actually measures, where it meaningfully correlates with deliverability outcomes, where the correlation becomes unreliable, and which complementary signals should be monitored alongside it, including Gmail Postmaster Tools, Microsoft SNDS<\/a>, complaint rates, reply rates, authentication health, and engagement metrics.<\/p>\n Sender Score is a useful reputation indicator, but it is not a standalone measure of deliverability health. Used correctly, it provides valuable trend visibility. Used in isolation, it can create misleading conclusions about actual inbox placement.<\/p>\n This is the article to read once before you start using Sender Score and to come back to whenever you\u2019re tempted to treat the number as the truth.<\/p>\n Sender Score is a 0\u2013100 reputation rating for an email-sending IP address, calculated by Validity using a rolling 30-day view of complaint rates, spam trap hits, sending volume, and engagement signals from its data network.<\/p>\n Score bands:<\/strong><\/p>\n It correlates with deliverability mainly for dedicated IPs with stable sending patterns. It becomes less reliable for shared IPs, low-volume senders, and B2B traffic-heavy environments.<\/p>\n Sender Score is not used by mailbox providers in filtering decisions. It is a third-party reputation indicator, best used for trend monitoring, not as a standalone measure of inbox placement.<\/p>\n<\/div>\n Table of Contents<\/p>\n<\/span><\/div>\n\n
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