ORF Fusion

The most versatile,
easy-to-use spam filter for businesses of all sizes

$80 / year


Unlimited domains

No false positives

* for 10 users


ORF 6.8.3 is now available!
See the changelog for details

Layered protection

No single technology catches all spam. The 23 layers of tests in ORF ensures the maximum detection rates.

ORF ♥ administrators

From the industry's best logs to the friendly UI, ORF works for the administrators, saving time, resources and sanity.

No false positives

Never miss an important email again. ORF ships with multiple dedicated tools against false positives.

Proven performance

Deployed at 15,000 organizations in 118 countries, ORF filters thousands of emails every second, 24 hours a day.

Technology Highlights

Does one thing. Exceptionally well.

ORF is designed from ground up to catch spam. This clear focus enables dealing with spam very efficiently, free of the compromises and complexities that cripple all-in-one systems so often.

A blend of technologies

There is no single technology that would stop all junk emails, so ORF does the next best thing and forges the industry's best performing anti-spam technologies together into a unified, rich and extremely effective framework.

Configurable to every detail

Your responsibility for providing uninterrupted email service finally comes with the power to achieve that. ORF can be customized to your organization, your requirements and your emails.

Simple and friendly user experience

Your average enterprise software cares little about the person who uses it. Experience something different with ORF which we crafted carefully with the administrator in mind.

Enthusiastic technical support

We believe a great customer service is personal, friendly and knows the deal, so we made ours just like that. To be there for you, our technical support is available free of charge without contract, even during planning and evaluation.

Business Highlights

No tolerance for false positives

If your email filter has ever lost an important email, you know it is real pain. The distinguished focus of ORF on preventing false positives saves you the frustration and guarantees business continuity.

A proven solution

ORF has been the choice of over 15,000 organizations in 118 countries around the world since its 2002 launch. Today, ORF filters thousands of emails every single second.

Low administration cost

Even the most fire-and-forget solution requires the administrator's attention occassionally. We know that is not for free, so to save you money, we made sure that maintenance tasks are simple, intuitive and well-documented.

Hassle-free licensing

Just a few highlights: licensed per actual user (not per mailbox); unlimited servers; free and unlimited technical support; and many more.


Starting from $80 / 10 users / 1 year with significant volume discounts, ORF Fusion is the best value on the market.

July 26, 2023

ORF 6.8.3 is available

The ORF 6.8.3 update addresses another set of bugs affecting previous releases. For more information about the bug fixes, please refer to the Change Log. You can download the installer from the Client (…)

June 9, 2023

ORF 6.8.2 is available

The ORF 6.8.2 update introduces bugfixes that address DKIM and ARC signature verification errors, the absence of ARC signatures in certain whitelisted emails, and email delivery issues in certain cases (…)

April 27, 2023

ORF 6.8.1 is available

ORF 6.8.1 fixes several bugs related to attachment filtering, configuration saves, and the log viewer. We recommend updating your ORF installations, particularly if you have experienced any of the problems (…)

March 28, 2023

ORF 6.8 is now available

We are pleased to announce that the latest version of ORF is now ready for download. Version 6.8 features a range of enhancements and modifications, including the addition of Plus Addressing and SQL Logging (…)

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Trial version download

Download the 42 day, fully functional trial version of ORF below.

ORF Fusion

for Microsoft® Exchange and IIS SMTP Service

  • version 6.8.3
  • released on July 26, 2023
  • size 13.2Mb
The 30-day statistics below are generated from automated, anonimized reports received from ORF users worldwide.
Total emails filtered
Spam rate
Ready to experience ORF? Take the tour, try ORF now free for 42 days, or take the deep dive and buy a license.
We offer a 90 day, no questions asked money-back guarantee.
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