What is sender score? A Plain-English Guide
Sender Score is a 0-100 reputation rating (by Validity) for your sending IP, based on volume, complaints, spam-trap hits and unknown users. Higher scores mean better inbox placement.
Why it matters for deliverability
Understanding sender score is part of how reputation is measured. Get it right and more of your mail reaches the inbox; get it wrong and even legitimate mail can be filtered.
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How Rainmail helps
Rainmail sends from your own domain on a dedicated, isolated IP with SPF, DKIM, DMARC, reverse-DNS and managed warm-up handled for you, plus an AI that watches your list health and deliverability — and it welcomes the senders Amazon SES, SendGrid and Mailchimp reject, from $8. Run the free 10-second checker or see plans.