Postgrey vs SpamSieve
A side-by-side look at Postgrey and SpamSieve. For an in-depth review of either product, follow the links below.
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
SpamSieve
Security & Privacy
SpamSieve is an anti-spam plugin for Apple Mail on Mac that uses Bayesian filtering to identify and block spam messages. It learns from user labeling of messages as spam or not spam to improve accuracy over time.
emailspamfilterbayesianmachine-learning
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