Email Spam Rate Calculator
The threshold that affects everyone on the list.
Complaint rate
0.094%
within the threshold
Within the threshold. The most reliable way to stay there is an obvious unsubscribe link — people who cannot find one press the spam button instead, and that costs far more than the unsubscribe would have.
How the Email Spam Rate Calculator works
Above the complaint threshold, mailbox providers start routing your mail to spam for everybody — including the engaged subscribers who wanted it. The usual causes are unclear consent, a hard-to-find unsubscribe link, and frequency that outran expectations.
Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price — check the platform's current fee schedule before you price a product against it. This is not tax or business advice.
Frequently asked questions
What complaint rate is acceptable?
Major mailbox providers expect complaint rates below 0.1%, and treat 0.3% as a hard problem. That is one complaint in a thousand delivered messages.
Why do people mark mail as spam rather than unsubscribing?
Usually because the spam button is easier to find than the unsubscribe link. Making unsubscribing obvious costs you a subscriber and saves your deliverability.
What raises complaint rates?
Purchased or scraped lists, pre-ticked consent boxes, sudden frequency increases, and content that does not match what was promised at signup.
Can I recover from a high complaint rate?
Yes, but slowly — reduce volume, mail only engaged contacts, fix the consent process, and rebuild reputation over weeks. There is no fast fix once filtering has started.