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Join the Chocolatey Team on our regular monthly stream where we put a spotlight on the most recent Chocolatey product releases. You'll have a chance to have your questions answered in a live Ask Me Anything format.

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Announcing Chocolatey Central Management 0.10.0

Livestream from
Thursday, 06 October 2022

We recently released our largest update to Chocolatey Central Management so far. Join Gary and Steph to find out more about Chocolatey Central Management and the new features and fixes we've added to this release.

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Chocolatey and Intune Overview

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Wednesday, 30 March 2022

At Chocolatey Software we strive for simple, and teaching others. Let us teach you just how simple it could be to keep your 3rd party applications updated across your devices, all with Intune!

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Chocolatey For Business. In Azure. In One Click.

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Thursday, 9 June 2022

Join James and Josh to show you how you can get the Chocolatey For Business recommended infrastructure and workflow, created, in Azure, in around 20 minutes.

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The Future of Chocolatey CLI

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Thursday, 04 August 2022

Join Paul and Gary to hear more about the plans for the Chocolatey CLI in the not so distant future. We'll talk about some cool new features, long term asks from Customers and Community and how you can get involved!

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Hacktoberfest Tuesdays 2022

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For Hacktoberfest, Chocolatey ran a livestream every Tuesday! Re-watch Cory, James, Gary, and Rain as they share knowledge on how to contribute to open-source projects such as Chocolatey CLI.

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Chocolatey Product Spotlight: Chocolatey 1.2.0 and Chocolatey Licensed Extension 5.0.0

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Thursday, 03 November 2022

Join Paul and Gary for this months Chocolatey product livestream where we look at the latest release of Chocolatey 1.2.0, Chocolatey Licensed Extension 5.0.0 and shine a spotlight on the new hook scripts functionality. This opens up so many possibilities for Chocolatey CLI users!

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Chocolatey Coding Livestream

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Tuesday, 29 November 2022

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Introduction into Chocolatey with Veeam

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Downloads of v 38.2.0:


Last Update:

03 May 2017

Package Maintainer(s):

Software Author(s):

  • Moonchild Productions


fossamail email news thunderbird palemoon discontinued admin


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38.2.0 | Updated: 03 May 2017



Downloads of v 38.2.0:



Software Author(s):

  • Moonchild Productions

FossaMail 38.2.0

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All Checks are Passing

3 Passing Tests

Validation Testing Passed

Verification Testing Passed


Scan Testing Successful:

No detections found in any package files

Learn More

Deployment Method: Individual Install, Upgrade, & Uninstall

To install FossaMail, run the following command from the command line or from PowerShell:


To upgrade FossaMail, run the following command from the command line or from PowerShell:


To uninstall FossaMail, run the following command from the command line or from PowerShell:


Deployment Method:


This applies to both open source and commercial editions of Chocolatey.

1. Enter Your Internal Repository Url

(this should look similar to

2. Setup Your Environment

1. Ensure you are set for organizational deployment

Please see the organizational deployment guide

2. Get the package into your environment

  • Open Source or Commercial:
    • Proxy Repository - Create a proxy nuget repository on Nexus, Artifactory Pro, or a proxy Chocolatey repository on ProGet. Point your upstream to Packages cache on first access automatically. Make sure your choco clients are using your proxy repository as a source and NOT the default community repository. See source command for more information.
    • You can also just download the package and push it to a repository Download

3. Copy Your Script

choco upgrade fossamail -y --source="'INTERNAL REPO URL'" [other options]

See options you can pass to upgrade.

See best practices for scripting.

Add this to a PowerShell script or use a Batch script with tools and in places where you are calling directly to Chocolatey. If you are integrating, keep in mind enhanced exit codes.

If you do use a PowerShell script, use the following to ensure bad exit codes are shown as failures:

choco upgrade fossamail -y --source="'INTERNAL REPO URL'" 

Write-Verbose "Exit code was $exitCode"
$validExitCodes = @(0, 1605, 1614, 1641, 3010)
if ($validExitCodes -contains $exitCode) {
  Exit 0

Exit $exitCode

- name: Install fossamail
    name: fossamail
    version: '38.2.0'
    state: present

See docs at

chocolatey_package 'fossamail' do
  action    :install
  source   'INTERNAL REPO URL'
  version  '38.2.0'

See docs at

cChocoPackageInstaller fossamail
    Name     = "fossamail"
    Version  = "38.2.0"
    Source   = "INTERNAL REPO URL"

Requires cChoco DSC Resource. See docs at

package { 'fossamail':
  ensure   => '38.2.0',
  provider => 'chocolatey',
  source   => 'INTERNAL REPO URL',

Requires Puppet Chocolatey Provider module. See docs at

4. If applicable - Chocolatey configuration/installation

See infrastructure management matrix for Chocolatey configuration elements and examples.


Private CDN cached downloads available for licensed customers. Never experience 404 breakages again! Learn more...

Package Approved

This package was approved as a trusted package on 09 Jul 2020.


FossaMail is an open-source, Mozilla Thunderbird-based mail, news and chat client for Windows and Linux, brought to you by the Pale Moon developers (and therefore not affiliated with the Mozilla Corporation). It is an alternative version of the Mozilla Thunderbird mail and news client, and based on the Pale Moon browser core.


Unfortunately, due to lack of time to maintain the code, and lack of users and funds, this project is now discontinued.

Although security issues are less frequent for a mail client because there is no scripting possible in e-mails, they are not nonexistent and as time goes on, it's inevitable that this client will become vulnerable. It will still continue to serve the people who already have it for a while yet, but everyone currently using FossaMail should consider finding an alternative mail/chat/news client to keep them from increasing security/privacy risks.

(This Chocolatey package will continue to work, but will no longer be updated.)

  • Is built from source with compiler optimizations geared towards an as stable and smooth operation of the client as possible (Pale Moon-alike optimizations).
  • Uses the Pale Moon browser core as its back-end. The client is therefore based on Pale Moon rather than other Mozilla-derived mail clients.
  • Uses its own profile folder on your system. This means it will not interfere with existing Thunderbird installations.
    • The default profile location is %APPDATA%\FossaMail
  • Should be compatible with many Thunderbird add-ons and plugins.
  • Is available in 32-bit (x86) and 64-bit (x64) versions for both Windows and Linux.
  • Comes with an optional calendar/organizer integrated that will allow it to be used in a Microsoft Outlook style information manager fashion.

FossaMail is an English language client, and this package does not install any other languages.

$InstallArgs = @{
  packageName    = 'fossamail'
  installerType  = 'exe'
  url            = ''
  url64          = ''
  checkSum       = 'E080C6877C82193CCF1CABD55AD1D7D5EF8470C5D2BC1E98C6CEA27674F8E50F'
  checkSum64     = 'EE855950394519D77C5834CCA8EFD69373AF9228F697AACAEAA5D9CE4010074A'
  checkSumType   = 'sha256'
  validExitCodes = @(0)

Install-ChocolateyPackage @InstallArgs

Redistributing FossaMail

Even though FossaMail is Free and Open Source software and the source is supplied under the Mozilla Public License, **redistribution of the FossaMail binaries (in executable form) is limited by certain conditions under a proprietary license by Moonchild Productions**, as permitted under 3.2b of the MPL v2.0.

Even though FossaMail is supplied as open source, our branding included in the source tree is protected and you are not granted any rights or licenses to the FossaMail name, logo, or other identifying official branding marks, names or phrases. To clarify the situation if you build from source to redistribute the resulting executable form, please see points 8, 10 and 12 below.

This license covers redistribution of officially supplied binaries (including the lightning extension which has binary components) and some policies regarding binaries built from source with official branding, which is allowed in some circumstances.


### Redistribution license

Last updated: 08 March 2016

If you wish to redistribute the binaries (executable form of the code) of FossaMail, you are free to do so, with the following limitations:

1.  There is NO CHARGE for the download or distribution of the client package or lightning.
    It is therefore **not permitted** if, without limitation:
    1.  You charge for the download of the binary packages (e.g. paid hosting service, pay-per-download, subscription, etc.) or access to them (password protected sites/archives/etc.)
    2.  You charge for redistribution rights of the client binaries, yourself (you have no rights to it)
    3.  You charge for a physical medium like a CD or DVD. Example: If you provide a "cover disk" with a *printed* magazine, that is considered a "no charge" item (free bonus item with the magazine) and is therefore allowed. If you provide a *disk-based* or *magazine* (digital distribution) that includes FossaMail, the medium itself is paid for and considered a "charge" item, and is therefore not allowed.
2.  You don't require the obligatory submission of personal data (name, e-mail, telephone number, address, age, gender, ID, or similar) to download the binaries. If you require registration of users before they can download FossaMail, you are not allowed to distribute it. Users must, at all times, have the *clear **and equal** option* to download FossaMail without surrendering *any* personal information to you.
3.  The binaries and/or archives are completely UNALTERED. This includes addition or removal of any component of the client or redistributing modified parts of the client as-built (including, without limitation, predefined profile components, altered jar or omni files, or modified .exe or dll components). Redistribution is therefore **not permitted** if, without limitation:
    1.  You have re-packed the browser in a different archive format (either common or proprietary)
        (an exception to this is re-packaging required for specific target operating systems, e.g. rpm, deb, pet)
    2.  You have added language packs/add-ons/plugins/etc.
    3.  You have added third-party tools/toolbars/utilities/etc.
    4.  You have changed supplied default preferences of the client
    5.  You include a pre-set profile
    6.  You have removed any component from the client package
    7.  You have edited or removed text or script files (including license files, readmes, JavaScript modules, etc.)
    8.  The binaries have been in any way infected with or include a virus, trojan, or other malware
    9.  The binaries and program structure have been in any way obscured (e.g. by using application virtualization) making it difficult or impossible to check for the previously listed alterations
4.  The binaries can be obtained without the use of third-party software not officially endorsed, including but not limited to: download managers, stub installers, wrappers, proprietary clients or proprietary protocols. This includes any offering of such unendorsed downloading software or methods, regardless of offering "direct" downloads or allowed methods alongside the unendorsed ones.
5.  The binaries are not supplied as an integral part of a commercial/non-commercial software package/larger works ("package"). If you wish to do this, you must contact me beforehand to obtain permission and discuss terms. Inclusion in a package will be subject to an individual agreement (either extemporaneous or legalized) which may or may not involve compensation.
6.  The binaries are not supplied as an integral part of a commercial/non-commercial website/web service/on-line venue/etc. ("service"). If you wish to do this, you must contact me beforehand to obtain permission and discuss terms. Inclusion in a service will be subject to an individual agreement (either extemporaneous or legalized) which may or may not involve compensation.
7.  An *exception* applies to points 5 and 6 of this license for educational purposes if bundled with other open source software or supplied as part of a curriculum or in-college resource for students.
8.  An *exception* applies to point 5 of this license for inclusion of the officially branded binaries in freely available and fully Open Source operating systems, including but not limited to non-commercial variants of Linux or variants of BSD. This exception only applies to *unaltered* versions of the FossaMail binaries or officially branded variants specifically built for the target operating system from source that have not been materially changed (including brand-specific configurations like e.g. home page, default search engine). If any of the essential settings of the browser are altered beyond what is strictly needed for providing a working build on the target operating system, the exception in this point does not apply and the license defaults to point 10, instead.
    1.  Clarification of "officially branded variants specifically built for the target operating system": If an officially-built binary (i.e. built by our team) is available for the target operating system (e.g. existing Linux binaries), then those binaries will always, in principle, take precedence over a third-party build to ensure necessary QA and compatibility. Building and distributing a binary with official branding is in that situation only in principle allowed if an actual variant build is required for the target distribution's compatibility (e.g. kernel or library requirements) or operation, and otherwise not impacting the material content of the browser package as a whole. QA of and support for the resulting variant binaries will in that case fall on the maintainer who will have to take full responsibility for the variant binary.
9.  This redistribution agreement and any Individual Agreements for the redistribution of executable code are provided by Moonchild Productions ("Moonchild", "M.C. Straver") explicitly for the FossaMail executable code, and not by the Initial Developer or any Contributor. The Initial Developer and every Contributor is hereby indemnified for any liability incurred by the Initial Developer or such Contributor as a result of these terms.
10. The **only** exception to this redistribution policy not otherwise covered in points 7 or 8 is if the repackaged or private build with official branding has been pre-approved by Moonchild for redistribution and is listed on this website or the official forum as an endorsed, contributed build. Contributed builds are subject to a screening process, may be accepted or rejected, may be re-screened at a later time, and may be at any time removed, in Moonchild's sole discretion, either with or without stated reason.
11. If a distribution is authorized as per point 10, the contributed build may be redistributed in unaltered form by third parties as set out in the points above and under the same conditions.
12. If you wish to distribute binaries for other platforms, building from FossaMail source code, you may **not** use official branding unless these builds have also been approved as a contributed build as per point 10 of this license or if they are exempt under points 7 or 8 of this license. Even so, you obtain no rights to the FossaMail or Pale Moon name or logo, merely the permission to use it for the 3rd party build, and only for as long as it is officially endorsed or satisfies the conditions for exemption. In all other cases you must use significantly different branding files/graphics and a significantly different name for the client.
13. Unofficially branded binaries with an unofficial or different logo and product name are not subject to the endorsement and exception rules as set out in previous points of this license and may be freely distributed in altered or unaltered form, subject to the Mozilla Public License as regards source code changes and availability. This permission does, however, not include any rights or license to the FossaMail or Pale Moon name and logo that may still be present in the resulting unofficially/individually branded binaries.


If you have any questions about this redistribution policy, think anything is in error or wish to discuss individual redistribution terms for your specific scenario, then please [contact me](

Site and contents © 2014-2017 [Moonchild Productions]( - All rights reserved
FossaMail is released as Open Source under the [Mozilla Public License (MPL) 2.0](
FossaMail in binary/executable form is subject to its [Redistribution License](redist.shtml)

Log in or click on link to see number of positives.

In cases where actual malware is found, the packages are subject to removal. Software sometimes has false positives. Moderators do not necessarily validate the safety of the underlying software, only that a package retrieves software from the official distribution point and/or validate embedded software against official distribution point (where distribution rights allow redistribution).

Chocolatey Pro provides runtime protection from possible malware.

Add to Builder Version Downloads Last Updated Status
FossaMail 38.1.0 425 Friday, March 24, 2017 Approved
FossaMail 38.0.0 409 Friday, March 10, 2017 Approved
FossaMail 27.0.0 460 Monday, February 6, 2017 Approved
FossaMail 25.2.4 512 Wednesday, November 16, 2016 Approved
FossaMail 25.2.1 396 Wednesday, June 1, 2016 Approved

This package has no dependencies.

Discussion for the FossaMail Package

Ground Rules:

  • This discussion is only about FossaMail and the FossaMail package. If you have feedback for Chocolatey, please contact the Google Group.
  • This discussion will carry over multiple versions. If you have a comment about a particular version, please note that in your comments.
  • The maintainers of this Chocolatey Package will be notified about new comments that are posted to this Disqus thread, however, it is NOT a guarantee that you will get a response. If you do not hear back from the maintainers after posting a message below, please follow up by using the link on the left side of this page or follow this link to contact maintainers. If you still hear nothing back, please follow the package triage process.
  • Tell us what you love about the package or FossaMail, or tell us what needs improvement.
  • Share your experiences with the package, or extra configuration or gotchas that you've found.
  • If you use a url, the comment will be flagged for moderation until you've been whitelisted. Disqus moderated comments are approved on a weekly schedule if not sooner. It could take between 1-5 days for your comment to show up.
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