Postgrey Alternatives

Postgrey is described as 'Postfix policy server implementing greylisting developed by David Schweikert' and is an app in the online services category. There are nine alternatives to Postgrey for a variety of platforms, including Windows, Linux, Mac, Web-based and Chrome OS apps. The best Postgrey alternative is Mailwasher, which is free. Other great apps like Postgrey are SpamAssassin, SpamSieve, MailRoute and Spam Reader.

More about Postgrey

Postgrey alternatives page was last updated Apr 14, 2025

Mailwasher
15 likes
Over 8 million people use MailWasher as their spam filter

Introducing MailWasher, the leader in spam filter software, and the easiest way to check and manage your e-mails before you download them.

MailWasher is free to use and wont ever expire. It works with Outlook, Outlook Ex.
16 Mailwasher alternatives
Cost / License
Freemium (Pay once)
Proprietary
Origin
New Zealand
Platforms
Windows
Linux
+3
Is Mailwasher a good alternative to Postgrey?
Mailwasher is the most popular Windows & Linux alternative to Postgrey.
Mailwasher is the most popular free alternative to Postgrey.
Mailwasher is Freemium and ProprietaryPostgrey is Free and Open Source
SpamAssassin
14 likes
Use this program to "Unspam" your mailbox(es). The program can be integrated with the mail server to automatically filter all mail for a site. It can also be run by individual users on their own mailbox and integrates with several mail programs.
22 SpamAssassin alternatives
Cost / License
Free
Open Source
Application type
Anti-Spam Tool
Platforms
Linux
Is SpamAssassin a good alternative to Postgrey?
SpamAssassin is the most popular Open Source alternative to Postgrey.
SpamAssassin is Free and Open SourcePostgrey is also Free and Open Source
SpamSieve
4 likes
Save time by adding powerful spam filtering to the e-mail client on your Mac. One of the only standalone spam filtering softwares for Mac.
Cost / License
Paid
Proprietary
Origin
United States
Platforms
Mac
Is SpamSieve a good alternative to Postgrey?
SpamSieve is the most popular Mac alternative to Postgrey.
SpamSieve is the most popular commercial alternative to Postgrey.
SpamSieve is Paid and ProprietaryPostgrey is Free and Open Source
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Mailwasher
Over 8 million people use MailWasher as their spam filter

Introducing MailWasher, the leader in spam filter software, and the easiest way to check and manage your e-mails before you download them.

MailWasher is free to use and ...

https://www.firetrust.com
Learn More
MailRoute
3 likes
MailRoute provides a hosted service for mail protection from virus and spam.

MailRoute is a secure, hosted cloud email filtering service that you can have up and running in minutes. There's no hardware or software to install - just sign up, change your mx record, and you&#39.
Cost / License
Paid
Proprietary
Application types
Anti-Spam Tool
Anti-Virus App
Origin
United States
Platforms
Online
Is MailRoute a good alternative to Postgrey?
MailRoute is the most popular Web-based alternative to Postgrey.
MailRoute is Paid and ProprietaryPostgrey is Free and Open Source
Spam Reader
1 like
Spam Reader is a free anti-spam add-on for Microsoft Outlook. The software uses the most reliable approach to block junk emails - Bayesian algorithm based on statistical analysis, capable to be adjusted to user's needs and detect up to 98% of spam messages.
Cost / License
Freemium
Proprietary
Application type
Anti-Spam Tool
Origin
United States
Platforms
Windows
Microsoft Office Outlook
Is Spam Reader a good alternative to Postgrey?
EuropeanMX
1 like
EuropeanMX blocks incoming spam and virus emails before they are reaching your network. With our outgoing filter you can secure your server's reputation. And last but not least we are offering encrypted cloud storage to archive all your emails.
Cost / License
Subscription
Proprietary
Application types
Anti-Spam Tool
Anti-Virus App
Origin
Germany
EU
Platforms
Online
Software as a Service (SaaS)
+2
Is EuropeanMX a good alternative to Postgrey?
EuropeanMX is the most popular SaaS alternative to Postgrey.
EuropeanMX is Paid and ProprietaryPostgrey is Free and Open Source
xTerminator
Like
This program helps you block spam and worms before they reach your mailbox.
Cost / License
Free
Proprietary
Application type
Anti-Spam Tool
Platforms
Windows
Is xTerminator a good alternative to Postgrey?
Anti-Spam SMTP Proxy Server
Like
The Anti-Spam SMTP Proxy (ASSP) Server project aims to create an open source platform-independent SMTP Proxy server which implements auto-whitelists, self learning Hidden-Markov-Model and/or Bayesian, Greylisting, DNSBL, DNSWL, URIBL, SPF, SRS, Backscatter, Virus scanning...
Cost / License
Free
Open Source
Application type
Anti-Spam Tool
Platforms
Linux
Windows
Mac
BSD
Chrome OS
Self-Hosted
+2
Is this a good alternative to Postgrey?
Anti-Spam SMTP Proxy Server is the most popular Self-Hosted alternative to Postgrey.
Anti-Spam SMTP Proxy Server is Free and Open SourcePostgrey is also Free and Open Source
Anti-Spam SMTP Proxy Server is Privacy focused and LightweightPostgrey is not according to our users
SmartInbox
Like
I’m personally getting a lot of Junk emails, one of the reasons is having a few LLC companies. A lot of other companies are trying to fix some issues (that don’t exist) or offer some services (that I don’t need).
Cost / License
Free
Proprietary
Application type
Anti-Spam Tool
Origin
United States
Platforms
Mac
Apple Mail
Is SmartInbox a good alternative to Postgrey?

9 of 9 Postgrey alternatives