Postgrey vs Web Form SPAM Protection
A side-by-side look at Postgrey and Web Form SPAM Protection. 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
Web Form SPAM Protection
Security & Privacy
Web form spam protection helps prevent spam and abuse of online forms on websites. It uses CAPTCHA, honeypots, spam blacklists, and other methods to distinguish humans from bots submitting forms.
web-formcaptchahoneypotblacklist
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