[%- mypath = "${template.name}"|replace('[^\/]*$','') -%] [%- PROCESS "${mypath}/relnote.var" -%] [%- PROCESS "changes.tmpl" -%] [% rnote.basename %] Release Notes

[% rnote.basename %]

You MUST absolutely do a full backup of your profile before upgrading from a version earlier than SeaMonkey 2.53.1. This version of SeaMonkey makes changes to your profile that can't be reverted in cases where you need to go back to the older version.

Automatic upgrades from previous 2.53.x versions are enabled for this release.

The Mozilla backend code SeaMonkey is based on, now usually incorporates breaking changes in every release. This is especially true for the Mozilla Gecko add-ons code and the JavaScript interpreter. Consequently, some older extensions may no longer function properly. If you experience any problems please refer to the troubleshooting section first. Especially try to disable extensions first and check if this makes a difference.
Important only if you upgrade from 2.49.5 or an earlier version: Due to changes in the user profile, if you have set a master password, you will have to remove it before upgrading to [% rnote.basename %]. After a successful upgrade, don't forget to manually remove the files key3.db and cert8.db in your profile afterwards, as they include credentials and passwords no longer protected by a master password. You can find the path to your profile folder entering the special about:support URL in a SeaMonkey browser window.
You can remove your master password by providing an empty password in the "Change Master Password" dialog. Do not use the "Reset Password" function. You will lose all stored passwords this way.
If you have a SeaMonkey 2.53.1 or 2.53.2 language pack installed you need to remove it before upgrading to this version. These language pack versions were marked to be compatible with all SeaMonkey 2.53.x releases and cause breakage when used with a different version. You can then install one of the provided [% rnote.baseversion %] language packs from the download section after installation of the base product.

For [% rnote.basename %], the following extensions are included.

Beta versions also contain the following extension.

These release notes describe system requirements, installation instructions, and known issues for [% rnote.basename %] up to/including [% rnote.name %]. These notes are updated when we receive feedback, so please check back for new information.

What's New in [% rnote.basename %]

[% rnote.basename %] contains (among other changes) the following major changes relative to [% rnote.relativeto.name %]:

[% rnote.basename %] contains (among other changes) the following major changes relative to [% rnote.relativeto.stable.name %]:

[% rnote.basename %] uses the same backend as Firefox and contains the relevant Firefox [% changes.sec.tm %] security fixes.

[% rnote.basename %] shares most parts of the mail and news code with Thunderbird. Please read the Thunderbird [% changes.tb.tm %] release notes for specific security fixes in this release.

Additional important security fixes up to Current Firefox [% changes.fx.esr %] and Thunderbird [% changes.tb.esr %] ESR plus many enhancements have been backported. We will continue to enhance SeaMonkey security in subsequent 2.53.x beta and release versions as fast as we are able to.

SeaMonkey-specific changes

Downloading

The SeaMonkey project provides official versions and language packs of [% rnote.name %] for Windows, Linux and macOS in US English and a small variety of other languages. Community volunteers are also contributing builds for other platforms. You can download [% rnote.name %] here.

System Requirements, Installation and Uninstallation

Before installing, make sure your computer meets the system requirements.
Please note that the new Windows x64 version will only support Windows 7 x64 and up. You need to uninstall a previous Windows x86 version if you want to use it. Installing the x64 over the old x86 is not supported and does not remove the old version which might cause problems later.
[% rnote.name %] will no longer offer to migrate your data from SeaMonkey 1.x or Mozilla 1.x at the first start after installation (bug 689437). In order to upgrade from such an old version, install the last SeaMonkey 2.0 release first, do the one-time profile upgrade, uninstall SeaMonkey 2.0 and then install your target release (e.g. this one).
If you are on an older release we suggest upgrading to SeaMonkey 2.49.5 first.
You can find more details about installation, profile data and uninstallation in our install and uninstall document.

Extensions (Add-ons) and Themes

Extensions and Themes for [% rnote.name %] can be installed from the SeaMonkey Add-Ons website or the "Get Add-Ons" section in the Add-ons Manager.

Extensions with binary components such as Enigmail only work for the specific platform they are released (e.g. win extension for Windows, linux64 for Linux 64 bits). Besides, matching version of extensions for SeaMonkey may not be the latest available of those versions. Therefore, they need to be adjusted for each new SeaMonkey release, which also means that an old version of such an add-on can break SeaMonkey if you disabled compatibility checking (which e.g. happens when you install the Add-on Compatibility Reporter add-on). Please, note the following warnings and advice regarding extensions:

Known Issues

This list covers some of the known problems with [% rnote.name %]. Please read this before reporting any new bugs.

Troubleshooting

Frequently Asked Questions

What can I do to help?
We need help from developers and the testing community to provide as much feedback as possible to make SeaMonkey even better. Please read these notes and the Bug Writing Guidelines before reporting any bugs to Bugzilla.
Why haven't you responded to the mail I sent you?
Use the alt.comp.software.seamonkey newsgroup or the SeaMonkey forums on mozillaZine. The SeaMonkey team read them regularly, and your email may have gotten lost.
Where can I get extensions and themes (add-ons)?
Extensions and Themes can be downloaded from SeaMonkey Add-ons.
Who makes SeaMonkey?
Lots of people. See Help->About SeaMonkey, contributors for a list of some of the people who have contributed to Mozilla and SeaMonkey.
Where's the [% rnote.name %] source code?
A tarball of the [% rnote.name %] source code is available at the download page. The latest development code can be obtained from the source repository. SeaMonkey-specific source is in the "suite" directory. Please follow the build instructions. We provide source code for 2.53.1 and future releases on gitlab. For accessing the site you currently need to use the web components polyfill add-on.
Can I remove the tool- and menubar grippies?
You can remove the tool- and menubar grippies by setting the preference "browser.toolbars.grippyhidden" to "true".

Other Resources and Links

The following resources contain useful information about [% rnote.name %]: