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Postgrey vs uBlock Origin

A side-by-side look at Postgrey and uBlock Origin. For an in-depth review of either product, follow the links below.

Postgrey

Postgrey

Network & Admin

Postgrey is an SMTP proxy program that temporarily delays mail delivery to help mitigate spam. It uses greylisting to reject initial email delivery attempts, forcing email servers to retry sending messages and confirming they are not spammers.

greylistingsmtpemail-deliveryantispam
uBlock Origin

uBlock Origin

Security & Privacy

uBlock Origin is a free, open-source ad blocker that works on a variety of browsers. It blocks ads, trackers, malware, and more to provide a cleaner and faster web browsing experience.

ad-blockingprivacyopen-source