Sub Projects:
These are general Thunderbird extensions that have been modified to work in Seamonkey. Unless specified, these do not depend on xSidebar. Several of these depend on the presence of xSidebar to supply Thunderbird compatibility functions. I recommend that you install xSidebar first.

New: addressContext 0.9, Message Archive Options 5.0.0, PrintingTools 1.2, Select Address Book Text 1.5, Folderpane Tools 0.6.1, Quote Colors 0.3, Mail Redirect, Display Mail User Agent 1.6.5, ConfigDate 0.7, Attachment Sizes 0.0.9, QuickMenuMC, Folder Flags 1.2, Tagzilla 0.066.2, Duplicate Contact Manager 1.2, XNote 2.1.1, Nostalgy 0.2.20, Attachment Extractor 1.2.2, ImportExportTools 2.2, Tag Dialog 1.0.3,



accountex is a powerful extension to export and import the account settings from/to Mozilla Thunderbird.
  • The export assistant saves your account settings in a xml based text file (RDF). Supported are pop3, imap and 'local folder' accounts.
  • The import assistant imports your saved account settings in a thunderbird profile. Very helpful for example after a new installation or re-installation.

Notes: While porting this extension to SeaMonkey I noticed that not all account information is exported, for example the Global Inbox setting new in Thunderbird 2.0. Outgoing SMTP servers are also not saved. The SMTP server key for an account is exported but if imported into an profile without that SMTP server or if it has a different key then the imported account will not have any outgoing server settings.

Paths to your mailbox files are absolute, so if you import an account into a new profile, the settings in the new profile/account will point to the mailbox files located in the account from where the settings were exported.

Install accountex for Seamonkey:


addressContext is an extension designed to speed up the process of adding email addresses to the address book in Mozilla Thunderbird. addressContext adds an entry to the context menu that allows you to choose between:

  • Add Senders/Recipients as Cards -Adds the senders or recipients of all selected messages to the address book, presenting a dialogue window for each sender to allow customization.
  • Add Senders/Recipients as List -Adds the senders or recipients of all selected messages to the address book to a new Mailing List entry. Further, since mailing list entries are really Address Book subdirectories, will add the recipients to the main address book, as well.

Install addressContext for Seamonkey 2.5 and above, Thunderbird 8 and above:

Install addressContext for Seamonkey 1.0 and 1.1:

Attachment Extractor

Attachment Extractor extracts all attachments from selected messages and then can delete, detach or mark-read.

Just select the messages containing the attachments you want to extract and select 'Extract Attachments' and this extension does the rest. No more having to go through each message to extract the attachments!

xSidebar needs to be installed for the options dialog to work.

Install Attachment Extractor for Seamonkey:
These versions are for SeaMonkey 1.1 to 2.0a3.

This version is for SeaMonkey 1.1 only. It will not work properly in 1.0, 1.5a, nor in 2.0a

Attachment Sizes

Attachment Sizes adds the ability to see attachment sizes:

  1. in the attachment box of messages.
  2. in the attachment box of the compose window.

Install Attachment Sizes for Seamonkey 2.0 and Thunderbird 3.0:


Install Attachment Sizes for Seamonkey 1.0 and 1.1:


ConfigDate allows you to configure the 'Date' column and displayed date in message header. In Thunderbird many people are confused because of the missing date from todays messages in the date column. By using ConfigDate, you're able to choose out of 5 different date formats.

To configure ConfigDate in SeaMonkey, select Edit —> Preferences... —> Mail & Newsgroups —> Date configuration


  • The 5 date formats are given by Thunderbird itself.
  • The date formats are depending on your systems/regions setting, too (e.g.: "25.08.2005 15:54" in Germany or "2005/08/25 15:54" in US).

Visit extensions homepage for more information including instructions to get the ISO date format, install instructions and a locales list:

Install ConfigDate for Seamonkey 2.0+:
configdate-0.7-mod.xpi (Updated for SuiteRunner)

Install ConfigDate for Seamonkey:
configdate-0.5-mod.xpi (Updated for SuiteRunner)

Dictionary Switcher

Dictionary Switcher toggles between the installed dictionaries automatically or manually and displays the currently selected dictionary in the navigator status bar. This SeaMonkey port also contains the Dictionary Switcher for Thunderbird which displays the currently selected dictionary in the mailnews status bar and allows to change it.

Dictionary Switcher 1.3.1 is now compatible with SeaMonkey 1.1 and above. Please install the latest Dictionary Switcher from at


Version 0.8.2-mod: Updated the Thunderbird component to 1.1.3. Fixed a logic error that was causing errors in the Error Console.

Version 0.8.1-mod: Fixes breakage on SuiteRunner builds due to switching to the hunspell engine. I've also improved compatibility with SeaMonkey 1.0 builds.

Install Dictionary Switcher for Seamonkey:

Display Mail User Agent

Display Mail User Agent adds an image on the right side of the "header view" which displays the icon of the application with which the selected mail was written. So if the person who sent the mail used e.g. mozilla to send the mail, a mozilla icon will be displayed.

In feedback window the link to the website of that mail client is shown. And you can click on it.

Install Display Mail User Agent for Seamonkey 2.1+:
Contributed by Marcelo Bastos

Duplicate Contact Manager

Duplicate Contact Manager searches for duplicate contact pairs and presents each pair to the user. The user can decide how to handle the pair.

Currently only one address book can be searched at a time. Users with multiple address books cannot search for duplicates between address books. This feature is planned for a future version.

Install Duplicate Contact Manager for Seamonkey 2.0 and Thunderbird 3.0:

Changes in this version:

  • Repacked in jar file format.
  • Updated install.rdf and chrome.manifest for SeaMonkey 2.0 and Thunderbird 3.0.
  • Split CSS for main overlay into a separate file.
  • Retained the GUID of Duplicate Contacts Manager 1 but incorporated the changes from Duplicate Contact Manager 2 by Alfred Peng and
  • Included the changes by iav (Igor Velkov) from his fork of Duplicate Contact Manager 2 on

Install Duplicate Contact Manager for Seamonkey 1.0 and 1.1:
duplicate_contact_manager-0.6-mod.xpi (SeaMonkey 1.0/1.1.* only).

Email This! Bookmarklet Extension

Email This! will send your recipient the link, title, & highlighted text of the page you are viewing using GMail, Google Apps GMail, Yahoo, Hotmail and Stand-Alone Mail Clients like Outlook Express, Thunderbird, & More! If you hate toolbar buttons don’t fret. I’ve included a right-click pop-up menu options and a menu on the main toolbar. Accesskeys are also an option.

Changes in this version: The Mailto option will open the integrated Mail client in SeaMonkey directly; and in Firefox it will invoke the internal Firefox API that opens an external mail client directly instead of the cumbersome and roundabout method currently used.

Install Email This! for Seamonkey:
email_this_bookmarklet_extension-2.0.0-fx.xpi (SuiteRunner Ready requires xSidebar).

Folder Account

Folder Account adds two very simple options. First, you can select which of your accounts will be used when composing, replying, or forwarding mail based on which folder is currently selected. An example where this could be useful is when two people share a set of folders. You could configure TB to set a different return address for you when you are working with your folders, and for the other user when they are using theirs. Alternatively, if you use a different mailing address for a mailing list, you can use this extension to set your return address appropriately when you working with the list's folder.

The second thing this extension does is allow you to set a default To address for newly composed messages based on which folder you are working in. This could be very useful for mailing lists – when you create a new message in the mailing list folder, your message would automatically be correctly addressed.

In both cases, if the current folder has no From address or To address specified, the extension will check the parent folder, so you can control the settings for an entire branch of your folder tree at one time.

Install Folder Account for Seamonkey 2.0:

Install Folder Account for Seamonkey:
folder_account-0.84-mod.xpi SuiteRunner Ready
folder_account-0.78-mod.xpi SuiteRunner Ready

Folder Flags

Folder Flags was born of the irritation that comes with having SpamAssassin deliver to a folder and watching that folder get scanned for spam by Thunderbird every time new mail arrives. By changing Thunderbird's internal flag per folder settings, I could finally get the scanning to stop and leave the mail alone.

You can set arbitrary flags on arbitrary folders, too. Mostly I think this makes the icons change, except the 'Junk' flag, which accomplishes what I described above. Right click on a folder in the main view and find 'Flags...' (if you're using the U.S. English version) to change flags on a certain folder. For SeaMonkey 2.0 and above, install the official version of Folder Flags from

Install Folder Flags for Seamonkey 2.0:

Install Folder Flags for Seamonkey 1.1:

Folderpane Tools

Folderpane Tools allows for customization of the Thunderbird folder pane. Accounts can be rearranged and the startup folder can be chosen. For more information about using the extension, visit the extension homepage. Requires Thunderbird or SeaMonkey.

Install Folderpane Tools for Seamonkey 2.2+ and Thunderbird 5+:

What's New:

  • Updated for Thunderbird 5 and SeaMonkey 2.2.
  • Added Hungarian Locale contributed by "DirektX" <>.
  • Renamed locales [de-DE, fr-FR, nl-NL, pl-PL] to [de, fr, nl, pl].
  • Updated locales: de, es-ES.
  • New locales ca-AD, cs-CZ, pt-PT, sv-SE, sr.
  • [fix] On OSX don't show the first run alert message as it can't be dismissed.

Install Folderpane Tools for Seamonkey 2.0 and Thunderbird 3.0:

What's New:

  • Updated for Thunderbird 3.0 final.
  • Fix for overriding the internal Thunderird 3.0 folderpane sort algorithm. Patch by Ben Lerner <blerner at>
  • Updated install.rdf for Shredder (Thunderbird 3.2a).
  • Refactored the in-line javascript in folderpane.xul into a separate folderpane.js file.

Install Folderpane Tools for Seamonkey 2.0 and Thunderbird 3.0b4:

Install Folderpane Tools for Seamonkey 1.0 and 1.1:

ImportExportTools (MboxImport)

Thunderbird, like many other email clients, uses the mbox format to archive email. It's curious that Thunderbird does not have a function that lets you import or export files in this format and this lack is sometimes a problem when you want to move the accounts from a pc to another one or when you want to migrate (for example) from Mozilla to Thunderbird.

MboxImport makes the import/export of mbox files very easy.

To import, you must select the destination folder, then right-click and choose the item "Import mbox file" from the menu "Import/export". To export, simply right-click on the folder or on the account and to choose the item you want from the menu "Import/export". The menu is also under "Tools".

ImportExportTools (MboxImport enhanced) now allows you to export and import messages with more flexibility, with the following options:

  • Tools Menu --> Import/Export in mbox/eml format
  • Context menu on folders panel --> Import/Export in mbox/eml format
    • export of folder in a single file (mbox format), with also the subfolders if you want;
    • export of all messages in single files (eml format);
    • export of all messages in single files (html or plain text format), with an index;
    • export of all messages in one single plain text file;
    • export of the index of the messages in a folder;
    • mbox files import;
    • eml files import;
    • import of all the eml files existing in a directory;
  • File menu --> Save selected messages
  • Context menu of thread panel --> Save selected messages
    • saving multiple messages in eml/html/plain text format with just a click;
  • Edit menu --> Copy message to clipboard
  • Context menu of thread panel --> Copy message to clipboard
    • copy the message with headers to clipboard.
  • Context menu on an EML attachment
    • import file in the folder

Install ImportExportTools for Seamonkey:

Install MboxImport for Seamonkey:


LookOut is a plugin which allows will allow Thunderbird to interface with Microsoft's mail tools by decoding metadata and attachments encapsulated/embedded in a TNEF encoded attachment. The TNEF decoding engine was inspired (with permission) by the project.

From Wikipedia
Transport Neutral Encapsulation Format or TNEF is a proprietary e-mail attachment format used by Microsoft Outlook and Microsoft Exchange Server. An attached file with TNEF encoding is most usually called winmail.dat or win.dat and has a MIME type of Application/MS-TNEF.

There are a few tnef decoders out there that do an excellent job. One could simply use one of these decoders as a helper application. This extension was created for two reasons. The first being that LookOut allows you to see what files are hidden in the anonymous encapsulation (winmail.dat). The second reason is the realization that some lack the desire to opperate more than one or two nonintegrated applications and LookOut makes the decoding part of the application. I would throw up a screenshot but that would be useless as LookOut is designed to be in the shadows doing it's thing and not be seen.

It should be noted that TNEF encapsulations will put a higher net and proc load on the IMAP server (or any other server for that matter). This is because there is no way for the client to ask for a sub-part of the TNEF file (whereas it can ask for a MIME part). If the client is to extract any sub-parts of the TNEF part it will need them all.

For SeaMonkey version 2.0 and above please install LookOut from

Install LookOut for Seamonkey:
lookout-1.2.3-mod.xpi (For SeaMonkey 1.0 and 1.1.* only. This version doesn't work in SuiteRunner)
lookout-1.2.1-mod.xpi (For SeaMonkey 1.0 and 1.1.* only. This version doesn't work in SuiteRunner)
lookout-1.2-mod.xpi (2007072301) (For SeaMonkey 1.0 and 1.1.* only. This version doesn't work in SuiteRunner)


The MailClassifier extension helps you to move the email in the right folder, it uses bayesian filtering. When a new mail arrives, it's classified and the most probable folder it goes in is showed in the new classification column. If you agree with the classification, click on the hyperlink and the email will be moved in the respective folder. If the classification is wrong or these is no classification you can train the software showing the right classification.

Right Click -> Classification -> Change directory and Move -> Right Folder

If you select multiple emails and want to move each mail in it's respective folder

Right Click -> Classification -> Move
Tools -> Mailclassifier -> Move messages

Instead, if you want to classify all the message in the current folder use:

Tools -> Mailclassifier -> Classify all

Install MailClassifier 1.0 for Seamonkey 1.1.x only:
NOTE: You should uninstall 0.6.3-mod first before installing a later version. Otherwise you might get a blank threadpane and messagepane.

Install MailClassifier 0.6.3 for Seamonkey 1.0.x only:

Mail Redirect

The Mail Redirect extension for Mozilla Thunderbird and Mozilla Mail client adds ability to redirect one or more mails to one or more recipients. Mail redirecting is also known as bouncing.

In office environment there is sometimes a need to forward email with original headers to somebody else. If forward or edit as new command is used, headers are very different comparing to original message (other From, Message-Id, Date fields). If you use Mailredirect Extension headers are not changed, so recipient of redirected mail has almost original message. In practice all important headers in redirected message are identical to original one (From, CC, Message-Id, Date).

Install Mail Redirect for Seamonkey 2.0 and above:
Contributed by Marcelo Bastos

Message Archive Options

Message Archive Options lets you set the format of the dates used for the year and month folders that the Archive function in Thunderbird3 creates. It exposes the (hidden) preference that lets you change the granularity of the folders to either a single folder; an archive folder and a year subfolder; or a month also.

Additionally the addon can add modifiers to the 'A' key shortcut so the key is Shift + A (or Control or Alt).

Install Message Archive Options 5.0.0 for Seamonkey 2.2 and above:
(This install.rdf mod contributed by Lewis G Rosenthal)


MessageFaces is obsolete. You can try using Display Contact Photo 1.2.2 instead

MessageFaces lets Mozilla Thunderbird display 'face' images in the message header section of e-mails and newsgroup messages. These face images are intended to represent the sender, in the form of photos, cartoons, logos and so on. MessageFaces supports the following Face types:

Type Description Supported
Face header Color PNG file embedded in the mail itself (specification) Display & Set
X-Face header Black-and-white image embedded in the mail itself. Display only; optional 'Globally recognized avatar' retrieved online from a central service. Display only; optional
Local images Any image in a directory of your choice. Display only; optional
Face URLs An image loaded from a web address specified in the mail
(possible privacy and security risk!)
Display only; optional

Install MessageFaces for Seamonkey 1.x:

No New Window on Double Click

No New Window on Double Click prevents Thunderbird from opening a new main window. When you double click on a folder in the folder pane, the folder will expand or collapse if it has subfolders. Also, when a program tries to run Thunderbird while it is already running, the new window is closed and the first main window will be brought to focus. New mail windows can still be opened when right-clicking on a folder and selecting Open in New Mail Window. This mod works in SeaMonkey 1.0 to 2.0a and should work in Thunderbird 1.5 to 3.0a.

In SeaMonkey 1.1 and above, you can go to about:config and change the setting mailnews.reuse_thread_window2 to true to achieve the same effect. In this case the only additional functionality that NNWODC provides is to close additional Messenger windows invoked by external applications.

Install No New Window on Double Click for Seamonkey:


Nostalgy is an extension for Mozilla Thunderbird whose purpose is to save time by doing more operations with the keyboard. If you want to use Thunderbird without sacrificing the productivity you had with good old mutt/pine, this extension is for you!

Nostalgy adds keyboard shortcuts to change folder, move/copy messages, with folder name auto-completion (using only the keyboard). Same for tags. Also includes a system of rules to suggest a target folder for saving messages; re-creates Eudora's Alt-Click; facilitates navigation in the 3-pane window; makes it easy to change between To/Bcc/Cc fields in the composer; facilitates tag-oriented operations. All that with the keyboard only!

Other keyboard actions include: changing focus between panes, scroll the message while keeping the focus on the thread pane, changing header in the composer (To/Cc/Bcc), adding an attachment, hide the folder view. Save time and get back the productivity you were used to with mutt/pine/eudora!

Note: All my changes are now in the official Nostalgy repository.

Install the latest Nostalgy for Seamonkey 2.0 and above from » SeaMonkey » Nostalgy

Install Nostalgy for Seamonkey 2.0:

Install Nostalgy for Seamonkey 1.0 and 1.1:


The PrintingTools for Thunderbird has the aim to improve the printing layout of the mails, with the following features:

  • it gives the possibility to have the date of the message in a format similar to the one used in messages panel;
  • it can also modify deeply the view of the attachments' list, inserting it in the headers, just after the recipients;
  • it can add a border arorund the headers;
  • it can hide the headers;
  • it can truncate the headers' lines too long;
  • it can hide the images in the message;
  • it can hide the inline attachments in printing, even if you view them by default;
  • it can add the user name before the headers;
  • it can delete the card header in addressbook ("Card for");
  • it can print contacts with just name and email address;
  • it can print addressbook with small fonts. The default value is 10 pixel, but you can change it as you wish;
  • it can use a compact format to print from addressbook (with this option and the others you can save up to 40% of paper);
  • it can print just selected part of a message;
  • it can apply a style (color and size) to the quoted text;
  • it can give more options in printing addressbook;
  • it can use a font family and a font size in printing messages (for the whole message or just for headers);
  • it can hide always extended headers;
  • it can modify headers order;

Install PrintingTools for Seamonkey 2.1+ and Thunderbird 3.0+:
(This install.rdf mod contributed by Lewis G Rosenthal)


The QuickMenuMC (QuickMenu for MoveTo and CopyTo) memorizes the most often used folders and offers a quick access to copy or move messages to this folders (see preview picture). The default setting is 4, but you can modify the number of folders to be memorized using the config editor about:config and editing the preference for QuickMenuMC.Slots.


  1. MboxImport: There may be problems with an installed MboxImport extension. in such cases MboxImport has to be deactivated *temporary* during the QMMC installation.
  2. Context-Menu in Message Window: The QMMC menu does not appear in the context menu of an open message but only in the mailbox/account view. This problem will be fixed in
  3. Folder Names: There may be problems with some special characters (e.g. chinese).

Install QuickMenuMC for Seamonkey 2.0 and Thunderbird 3.0:
(This mod contributed by Tony Mechelynck)

Quote Colors

The Quote Colors extension for Mozilla Thunderbird and the Mozilla Mail & Newsgroup client adds an user interface for configuring text and background colors for different quote levels when displaying messages (up to 5 levels currently). The settings apply to mail and newsgroups messages, either in plain text or HTML. For graphical quoting (HTML style) you can adjust the appearance of the borders around the quoted paragraphs. Some other basic message options are available, too.

Install Quote Colors 0.3 for Seamonkey 2.1:
Version bump contributed by Marcelo Bastos.
Broken status bar in message window. Patch by InvisibleSmiley.

Starting with version 0.2.9 of Quote Colors support for Thunderbird and SeaMonkey 2.0 has been merged into one extension. So get the latest version from the Quote Colors installation page.

Version 0.2.8 has been modified for SuiteRunner. I've basically merged the Suite and Thunderbird versions (the differences were trivial) so this version will work across Thunderbird, XPFE/SeaMonkey and the new SuiteRunner.

Install Quote Colors for Seamonkey 1.0 and 1.1:

Remote Image Cache

Remote Image Cache was done as a request for someone on the Mozillazine forums. It's in the sandbox at AMO so you'll have to be a registered user to view it there. Here is the text from the AMO page explaining how it works:

Saves remote images from emails locally when mail is viewed for the first time. This allows you to view mails with remote images and have them display correctly even if you’re offline or the server hosting the remote images is down. The extension fully supports the remote content blocking policy of the user and won't get the images until the user has allowed it for the given message. Some Q and A

Install Remote Image Cache for Seamonkey:

Remove Duplicate Messages (Alternate)

Remove Duplicate Messages (Alternate) is an extension for, well, removing duplicate messages from your mail folders. You select some folder for a dupe check, then get a nice dialog for selecting which messages should be deleted and which kept (or no dialog if you don't want it), then the superfluous messages are deleted. Pretty straightforward right...?

Install the latest Remove Duplicate Messages (Alternate) for Seamonkey from the authors website.

Select Address Book Text

Select Address Book Text makes your address book more usable. Have you ever wanted to quickly copy a name or phone number from your address book into an email? Have you wanted to quickly create a mailing label for one of your address book contacts? This extension makes these operations as easy as a single context-menu click.

With this extension, the individual fields on your contact card are easily copy-able by using the context menu. You can copy a complete mailing label (address, or name and address) with a single menu operation. You can also use your mouse to select and copy whatever text you wish. Without this extension, Thunderbird requires you to open the "Properties" dialog box and spend time searching again for what you want, and copying each field individually. With Select Address Book Text, when you see what you want, you can copy it immediately.

Install Select Address Book Text for Seamonkey 2.0+:

Send Filter

Send Filter allows you to run your message filters automatically on sent messages after sending.

Enable the message filters automatically on the sent folder. It adds a checkbox to the filter setting dialog and allows you enable the filters autorun on the folder which you save your sent messages at after sending.

NOTE: This add-on runs as the same as you select from menu tool->Run Filters on Folder, just autorun after sending. So you should be careful of your filter define, perhaps you just defined your filter against to the incoming messages, but TB can not differentiate which is for incoming and which is for outgoing. So when they are be run at the sent folder, you maybe get a strange result. A way to avoid this is that add a "from" condition to the filters which you want they are be run on sending, and also add a "to" condition to the filters which are for incoming. Of course, the value is your own mail address.

Install Send Filter for Seamonkey:


Signature inserts custom text into forum posts and emails (i.e. attach a signature to your emails).

In a text box on a web page:

  • right click and choose what to insert.
  • press <ctrl-space> or <alt-/> and choose what to insert.
  • type the start of the element to insert press <ctrl-space> or <alt-/> and watch it fill the rest.

In the message compose window, in the main editing area:

  • right click and choose what to insert.
  • press <ctrl-space> or <alt-/> and choose what to insert.
  • type the start of the element to insert press <ctrl-space> or <alt-/> and watch it fill the rest.

Install Signature for Seamonkey:

Tag Dialog

Tag Dialog allows you to easily add or create tags.

  • With Tag Dialog you can add several tags at one time.
    • You can input tag names into the text box separated by commas.
    • You can also toggle on & off check boxes from the tag list
  • Candidate tags will appear while typing in tags.
    • Ctrl+n, Ctrl+RIGHT, Ctrl+DOWN will select the following candidate
    • Ctrl+p, Ctrl+LEFT, Ctrl+UP will select the previous candidate
    • Ctrl+ENTER, will complete entering the current tag.
  • The dialog can be showed with typing i(shortcut key) or using the main menu -> Message -> Tag Dialog
  • Options dialog (Addons dialog -> Tag Dialog)
    • Change the demiliter for tags
    • Whether candidate tags are case sensitive or not
    • Enable edit if a tag is new
    • Default colour for a new tag
  • Context menu
    • Edit the tag
    • Copy the tag name
    • Delete the tag
    • Show Options dialog
    • Set the message filter

Install Tag Dialog for Seamonkey:


TagZilla is an add-on to Mozilla that lets you add a tagline, random or specifically chosen by you, to the end of an email or newsgroup posting, or to the clipboard for pasting into a Web-based email or message board.

What is a tagline?

A tagline is a one-line joke, witticism, factoid, what have you. It can be about any subject (although it's good to ensure it's appropriate to the forum in question). The random quotes that can be found at the end of web pages like Slashdot or the MozDev home page could be considered taglines.

Notes: Tagzilla currently requires that you have JSLibinstalled. A version of JSLib might not be available for SeaMonkey 2.1 and above so I've uploaded a version of JSLib that will work in SeaMonkey 2.1 and above.

Install JSLib 0.1.366 for Seamonkey 2.1 and above.

Install Tagzilla 0.066.2 for Seamonkey 2.0 and Thunderbird 3.0.

  • [Updated] Now works in SeaMonkey 2.0 and Thunderbird 3.0.
  • Added a chrome.manifest to the XPI.
  • Activated the existing de-AT, de-DE, es-AR, fr-FR, and ru-RU locales.
  • Fixed various non-fatal error console messages.
  • Increased the width of the options dialog to 36em.
  • In the SeaMonkey message compose window CTRL-J invokes the Download Manager. We grab this key back for Tagzilla.

Install Tagzilla 0.066.1 for Seamonkey 1.0 and 1.1.

  • [Updated] SuiteRunner Ready.
  • [Fixed] Missing strings in the de-DE and de-AT locales.
  • [Fixed] Access settings for all identities in each account and not just the default identity.

All patches have been rolled into the latest official Tagzilla Releases which can be obtained from

These are unofficial bug fix versions which I've made to Tagzilla 0.059 in order to get it working in current versions of SeaMonkey, Thunderbird, and Firefox. These changes will make their way eventually to the official Tagzilla releases.

  • [New] es-AR locale.
  • [New] Added tooltip to the toolbar buttons.
  • [New] style="width:32em;" code to fix the options dialog in Thunderbird.
  • [New] Resized toolbar icons ( small: 16x16 & large: 24x24 px).
  • [Fixed] If you insert a tagline when composing an email, it won't ask you to insert another when you send.
  • [Fixed] In auto mode, the tagzilla window opens after the mail is sent. Now it should open before the mail is sent allowing you to select a tagline.
  • [Fixed] In manual mode an additional tagzilla window opens after the mail is sent.
  • [Added] Russian Locale contributed by someone on the Tagzilla mailing list.
  • [Fixed] Error in the Pref dialog unload handler.
  • [Fixed] Rewritten the Preference dialog to use an overlay instead of an iframe. This should stop the bottom of the dialog getting cut off.
  • [Changed] Increased the width of the tagline sample display textboxes (In the preference dialog) so that the scroll bar doesn't appear unnecessarily.
  • [Changed] Bumped the maxVersion for Thunderbird and Firefox to 3.0.*.

Install Tagzilla for Seamonkey:

Unselect Message

The Unselect Message extension prevents Thunderbird from selecting the next message after you've deleted or moved the previously selected ones. Stay in control of which message you want to have selected and displayed in the preview pane; that piece of spam you're deleting really shouldn't have a say in that.

In addition, you can click into the empty space below the last message in the thread list to unselect the currently selected message and to clear the preview pane.

This extension works best with the "Remember the last selected message" option unchecked. If you have it checked, the last message Thunderbird remembers will indeed be the one which was selected before you unselected all of them.

Install Unselect Message for Seamonkey:


XNote allows you to create a note for each mail. Thus, you can add for example the phone number of that contact or when you have to contact the sender back.

Features :

  • Add notes to messages
  • highlight messages with notes
  • Resizable notes
  • Translated into English, French and German
  • XNote is licenced under LGPL

XNote est une extension pour le client mail Mozilla Thunderbird. Elle permet d’associer une note à un mail et apparaît à l’écran sous la forme d’un post-it lors d’un clique sur un mail annoté ou sur demande de l’utilisateur. Il est ainsi possible de compléter un mail par des informations extérieures

Fonctionnalités :

  • Permet d’ajouter des notes de type post-it électronique aux emails
  • Les emails annotés apparaissent d’une autre couleur
  • Possibilité de modifier la taille des notes
  • Disponible en français, anglais, allemand, italien et néerlandais
  • XNote est diffusé sous licence LGPL

Note: XNote has been orphaned and hasn't been updated for Thunderbird 3.0. I've released a minor modification 2.1.1 that basically contains just enough changes to make this work in SeaMonkey 2.0. This may also work for Thunderbird 3.0 but it hasn't been tested there. I've also fixed a long standing bug that has been annoying me for ages.

Install XNote for Seamonkey 2.0+:

Install XNote for Seamonkey 1.1:

Install XNote for Seamonkey 1.0:

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