Best Postgrey Alternatives (19)
Looking for a Postgrey alternative? We've compiled the best options based on user reviews, features, and pricing to help you find the right fit.
What is Postgrey? 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.
Top Alternatives to Postgrey
SpamAssassin
FreeSpamAssassin is a powerful open source anti-spam filter for email. It uses a variety of detection techniques and rules to …
Mailwasher is an email cleaning software that allows users to filter and organize incoming email. It helps eliminate spam, malware, …
BullGuard Spamfilter is an email spam filtering software that uses algorithms and rules to detect and block spam before it …
Spam Reader is an email spam filter that aims to identify and block spam before it reaches your inbox. It …
Happy Moose is a user-friendly and customizable project management software. It allows teams to plan projects, assign tasks, track progress, …
More Similar Software
Postgrey Overview
Postgrey is an open source SMTP proxy program designed to help mitigate email spam. It uses a technique called greylisting to reject initial delivery attempts for emails from unknown servers. Legitimate email servers will retry delivery after some delay, while spam servers typically won't bother retrying.Here's how Postgrey works: It sits between your mail server and the internet, intercepting all incoming SMTP connections.When an unknown mail server first tries to deliver an email, Postgrey temporarily rejects it with a 4xx …
Pricing: Open Source
Quick Comparison
| Software | Pricing | Score |
|---|---|---|
| Postgrey | Open Source | — |
| SpamAssassin | Free | — |
| SpamSieve | N/A | — |
| Mailwasher | N/A | — |
| BullGuard Spamfilter | N/A | — |
| Spam Reader | N/A | — |
| Happy Moose | N/A | — |
| MailRoute | N/A | — |
