Penny Spam is a shared blacklist with an extension for Gmail and Outlook. Report an unwanted sender for a penny, and the reports from everyone else decide whether they get filtered. The penny is there so nobody reports for sport.
No account. Tap through the whole thing in about ninety seconds.
A score is weighted by how many independent people reported a sender, what evidence came with each report, and whether the behaviour repeats. Reporters who are repeatedly overturned lose weighting. That is the only thing that makes the penny mean anything.
Reports from the same organisation count once. Nine people at one company cannot outvote nine companies.
The middle one is genuinely arguable. We do not filter arguable by default, and you can choose to.
Any sender can look up their own score for free, without an account.
A challenge is resolved on evidence: opt-in records, unsubscribe handling, sending volume. Not on who complains louder.
When a challenge succeeds, the score is restored, the overturn is logged, and the reporters who got it wrong carry less weight next time.
A blacklist with no appeal is just a grudge with a database.
Scores are built from behaviour: volume, repetition after an unsubscribe, scraped recipients, spoofed replies. Never from whether the pitch was annoying.
You preload a balance, usually a dollar or two, and each report takes a penny. The penny exists to make a throwaway report cost something, not to make us money. It covers review costs and the remainder funds the challenge process.
The business is selling access to the shared network to companies and email security tools. You are not the product, and neither is your inbox.
Eleventh message. Four after an unsubscribe.
Tap through a report, watch the score move by almost nothing, then look at the one that was wrong and got reversed.