Spam Complaint Rate
Spam complaint rate is the share of people who marked your email as spam.
When someone hits the spam button, it counts as a complaint. The complaint rate is the number of complaints divided by the emails delivered.
Keep it very low. Gmail and Yahoo want it under 0.3%, and you should aim well below that. The best way to avoid complaints is to only email people who clearly asked to hear from you.
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Start freeLast updated: June 25, 2026