Install Thunderbird

Go to End

29 Jun 2021: Advice against upgrading to release 78 removed because more add-ons become compatible. Some notes added.

16 Jan 2021: TbSync manual configuration for Google added.

15 Jan 2021: Google Calendar Plugin added. PrintingTools attachments per line option added. Header fixed font size revised. CardBook add-on removed because TbSync supports Google again. Lists of add-ons updated. 

19 Nov 2020: Option set to show all folders without subscribing individually. CardBook add-on added because TbSync no longer supports Google. Lists of add-ons updated. 

8 Sep 2020: 'Manually sort folders' add-on added.

12 Aug 2020: Revised to fix font for print headers only.

11 Aug 2020: First Created.


Thunderbird is an email client.

Install Thunderbird

Download the latest release from here and install:

Download old releases from here and install:

Set up the first email account.

For Gmail account, enter the Gmail address and use automatic setup.

Use the following settings to manually set up email account accessing company's email server:

  • Account Name: kctcl
  • Your Name: K C Tang Consultants Ltd.
  • Email Address:
  • Incoming Server Type: IMAP Mail Server
  • Server Name:
  • Port: 993
  • Connection security: SSL/TLS
  • Authentication method: Normal password
  • Outgoing Server Name:
  • Port: 465
  • Connection security: SSL/TLS
  • Authentication method: Normal password

Select Tools > Accounts Setting to further define or adjust the settings:

Uncheck "Show only subscribed folders" to show all folders instead of subscribing individually:

(Added, 11 Nov 2020)

The default is to keep all messages on the local computer as shown below, but it is suggested not to do so to avoid using up local computer's storage space. Subject headings will always be downloaded. The email body and attachments will be downloaded only when being read, and may take a bit longer time, but this should be tolerable.

(Note added, 29 Jun 2021)


Select Tools > Accounts Setting > Account Actions > Add Mail Account to add other accounts.

Leave the options under Tools > Options as the default except in the following case (not required now as the Postfix configuration can be raised).

When the tls security level has to be lowered if the email server is not of the level expected by Thunderbird:

Select Tools > Options > General > Config Editor > I accept the risk > Search "security.tls" > security.tls.version.min

Change the default value "3" to "1" and select OK and exit.

(Note to adjust tls security level added, 29 Jun 2021)

Install Add-ons​​​​​​​

Select Tools > Add-ons.

Search at "Find more extensions" for the following add-ons, install them and restart Thunderbird:

  1. AttachmentExtractor Continued - to download attachments (emails must have been fully downloaded before the full attachments can be extracted)
  2. Google Calendar Plugin - to open Google calendar
  3. ImportExport Tools NG - to import or export emails or folders, good for exporting for archive 
  4. Lightning - to use calendars (better use Google calendars directly)
  5. LookOut (fix version) - to open Outlook attachments
  6. Manually sort folders - to re-sequence order of accounts and folders
  7. PrintingTools NG - to set print page layout
  8. Provider for CalDAD & CardDAV - required for TbSync below
  9. Quick Folder Move - to move or copy emails between folders
  10. Remove Duplicate Messages - to remove duplicate emails
  11. SmartTemplate4 - to set templates for composition, reply and forwarding
  12. TbSync - to synchronize contact, task and calendar information.

(Lists updated, 15 Jan 2021)

(Note against AttachmentExtractor added, 29 Jun 2021)

Use Quick Folder Move

Select some messages.

Press the following keys to open a context menu, enter a few characters for the name of the destination folder to display possible choices, move down to select the folder, and press Enter.


Shift+M to move the currently selected messages to the destination folder.

Ctrl+Shift+M to repeat moving to the previously selected folder.

Shift+Y to copy the currently selected messages to the destination folder.

Ctrl+Shift+Y to repeat copying to the previously selected folder.

Shift+G to jump to the destination folder (without the need to pre-select come messages).

Setup Remove Duplicate Messages

Select Tools > Add-on Options > Remove Duplicate Options:

Select Move to Trash instead of Delete permanently if not sure.

Select Folder if comparison is not across different folder.

Setup Print Page

Select File > Page Setup:

Setup Printing Options

Select File > Printing Options:

(Attachments per line option added, 15 Jan 2021)

(Header fixed font size revised, 15 Jan 2021)

Setup SmartTemplate4

Select Tools > Add-on Options > SmartTemplate4:

Copy and paste the following latest Code in the Quote Header of the Reply and Forward options:

<a blank line first>

Mr. K C Tang <replace with your name>
K C Tang Consultants Ltd.
T:(852)2866-6451 F:(852)2865-4751

<SPAN style="FONT-SIZE: 10pt">
<b>Sent: </b>%date% ​​​​​​​<Use this to show: Sent: Mon, 14 Dec 2020 10:47:45 +0800>
<b>Sent: </b>%X:=sent% %datelocal% %date_tz% ​​​​​​​<Or use this to show: Sent:  Monday, Dec 14, 2020, 10:47 +0800>
<b>From: </b>%from(name,bracketMail())%
<b>To: </b>
<SPAN style="FONT-SIZE: 8pt">
[[<br><b>Cc: </b>
<SPAN style="FONT-SIZE: 8pt">
%cc(name,bracketMail())%</SPAN>]][[<br><b>Bcc: </b>
<SPAN style="FONT-SIZE: 8pt">
<b>Subject: </b>%subject%

(Note against date formats added, 29 Jun 2021)

Insert license key in the next menu.

Setup TbSync

Select Tools > Synchronization Settings (TbSync):

Or select Tools > Add-on Options to go to the following, then select Add new account > CalDAV & CardDAV:

Select Install Provider > download link:

Add CalDAV & CardDAV:

After adding, and re-starting Thunderbird as necessary, go back and select Manual Configuration > Next:


Account name: friendly account name, e.g. kctangcl

User name: account name

CalDAV server address:

CardDAV server address:

Select Next:

(Manual configuration added, 15 Jan 2021)

The following is an older version of TbSync which provided automatic Google support. In that case, select Google > Next:

Enter a friendly account name and select Next:

After selecting Next in the manual case or automatic case, enter Google account email address and its password (may require doing it twice):

Select Finish:

Select Enable and synchronize this account:

Available resources like Google address book and calendars will be displayed.

Select those to be synchronized > Synchronize now:

The address book and calendars will be available for use.

Change Periodic synchronization (in minutes) to 30, which is the minimum interval. 


End of Page