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What’s new in GFI MailEssentials

Version 21.6

Released: January 14, 2020


  • Support for EMZ/WMZ file for the Malformed File Extension under Email Exploit Engine
  • Attachment with a virus is detected in mixed direction when internal scanning is disabled.
  • Upgrade - Issues with directly installing on an existing version without patches
  • SpamTag - Support TLS 1.2
  • SpamTag - "Ignore SSL Policy error" option will not be required for valid certificates
  • SpamTag - Upgrade hang issue is fixed
  • Fix to ensure the domains are added in a valid format in HTML Sanitizer
  • Handling large files in Decompressor
  • AntiPhishing - Issues with case sensitiveness of keywords is fixed.
  • Issues with cache refresh in Email Blocklist / Access control settings are fixed
  • Issue with accented characters in user name / password of proxy server
  • Fix to allow updates of Antivirus / Move to Exchange Folder actions when FIPS is enabled
  • Other minor UI fixes

Customers with a
valid subscription are
entitled to a FREE upgrade.
Download the latest version

Downloads and Upgrades

For product downloads and information about upgrading GFI MailEssentials, visit the GFI Upgrade Center.

If you have additional queries about these changes, please do not hesitate to contact us or an authorized GFI Partner directly.

Version 21.5

Released: April 16, 2019



Version 21.4

Released: September 20, 2018

GFI MailEssentials 21.4 is a release with a number of fixes and new functionalities.



Version 21.3

Released: June 19, 2018

GFI MailEssentials 21.3 is a maintenance release with a number of fixes.


Version 21.2

Released: April 17, 2018

The latest version of GFI MailEssentials version 21.2 is now available for download.

This new version of GFI MailEssentials includes updates to the anti-spam and antivirus engines as well as numerous fixes to improve functionality and reliability in the product.

See the Release Notes below for a complete list of updates.



Note upcoming changes to requirements: GFI MailEssentials version 21.2 is the last version that will support the following systems:

Version 21.1

Released: October 26, 2017

The latest version of GFI MailEssentials version 21.1 is now available for download.

This new version of GFI MailEssentials brings important fixes to licensing, web UI and anti-spam services. Our focus for this release was to bring improved overall stability and product quality.

See the Release Notes below for a complete list of updates.

Version 21.0

Released: October 5, 2017

The latest version of GFI MailEssentials version 21 is now available for download.

This new version of GFI MailEssentials brings new antivirus engines including Sophos and Cyren, as well as an easier licensing model and several fixes to improve the product. GFI is continually reviewing antivirus technology to ensure we are using the best technologies possible. This release includes easier licensing so that partners can manage all of their product licenses and updates from one location.

See the Release Notes below for a complete list of updates, which include


Version 20.3

Released: March 24, 2017

GFI MailEssentials 20.3 provides a few minor feature improvements including allowing whitelist and blocklist configuration from the GFI MailEssentials dashboard, and the ability to scan compressed files with a .gz extension. This release also includes over ten fixes which ensure continued product quality.

Minor new features include:

Read more on the GFI MailEssentials product page, and download the latest version.

Version 20.2

Released: January 10, 2017

The latest release of GFI MailEssentials continues to provide considerable improvements and optimisations for a better product experience and also keeping ahead of the curve with the latest security threats. Check out the list below for the list of all the updates to GFI MailEssentials.

Kaspersky 0 Hour

The latest version of the Kaspersky AV engine features an intelligent cloud service that enables scanning of unknown executable attachments and make decisions if the files are malicious or not.

This feature will be available to all who have the existing Kaspersky AV addon and upgrade at no additional cost. Must be enabled after agreeing to a EULA on data being transferred.

GFI Directory Support

GFI MailEssentials now supports GFI Directory. As part of the GFI suite of products, when installing GFI MailEssentials in a DMZ or an environment which does not have Active Directory, GFI MailEssentials can be linked to GFI Directory and enable administrators to manage users just like they would with Active Directory. This enables IT administrators a lot more flexibility when managing blocking rules for users in such environments.

Minor improvements

Improvements to common/known issues such as:

Patch Rollup

This version of GFI MailEssentials contains all the updates and security fixes released that have been released since the previous version.

Version 20.1

Released: May 3, 2016

The latest version of GFI MailEssentials (Version 20.1) is a bug fix release that comes bundled with all the previous fixes issued previously via live updates and some other tweaks and improvements under the hood.

The updates include:

Version 20

Released: January 14, 2016

You asked, we delivered! GFI MailEssentials 20, the award winning anti-spam and email security solution, keeps on getting better through a set of major advancements:

Anti-spam multithreading for improved email throughput

The advantage of a multithreaded program is that it can operate faster on computer systems that have multiple or multicore CPUs, or across a cluster of machines. Using this multithreaded approach, GFI MailEssentials supports a substantially faster email throughput with lower resource consumption.

x64-bit backend and action services processing

64-bit is required for GFI MailEssentials to process high email volume environments more efficiently. The services that would benefit most from this change are the backend services, which handle both quarantine and reporting stores as well as Action Services service.

Remote Active Directory (AD) support

GFI MailEssentials can now be installed on non-AD machines such as IIS SMTP or Edge servers leveraging Active Directory even though it is not locally available.

Information store scanning support for Exchange 2013 and later using Exchange Web Services

This feature allows Microsoft Exchange 2013 (and later) users to leverage information store scanning, in order to scan for malware via Exchange Web Services (EWS).

Exchange 2016, Windows 10 and Office 2016 platform support

GFI is committed to remain abreast with and support Microsoft’s latest technologies. Therefore, this release of GFI MailEssentials is shipping with full support for Exchange 2016, Windows 10 as well as Office 2016.

The above features further equip GFI MailEssentials to better cater for larger environments and MSPs who process large quantities of emails. Not only does the product scale to the volume of mail flow processed but does so seamlessly in the diverse environments it is deployed to.