Add-ons
Message and News Reading
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Quote Colors & Collapse
Configure text and background colors of quotes in mail and news messages. From up addon version 3 (Thunderbird 91) you can collapse quotes.
Slideshow
Requires Restart
Displays a slideshow of picture attachments. When email has attached pictures, it displays "View as Slideshow" button next to the attachment. Button click pops a slideshow window with all the images, allowing you to zoom in/out, save...
Quick Web Search
Requires Restart
Quick search for selection text in Web. Customized for Google, Yandex, Bing, Yahoo, AOL and Baidu.
Open In Conversation
Requires Restart
Make the default message list action be "Open Message in Conversation" when double-clicking or using the "Enter" key to open an email from the message list.
UrgentMail
Raise X11 urgent flag if new mail is received.
This addon listens for incoming mails and causes the Thunderbird window to draw attention.
Get Partial Messages
Requires Restart
Get the rest of all partially downloaded messages from server.
CompactHeader
Requires Restart
Add symbol in header plane to switch between compact and expanded view. Work only for Thunderbird 68.0 and older. Currently, there are no plans to update this for newer versions.
QuickFilter Unreplied
Requires Restart
Battered with Emails? Need to sort them out? This extension adds a button to the Quick Filter toolbar that shows only unreplied emails. The extension works instantly, just install and look at your Quick Filter toolbar.
AttachmentCount
Adds a column to the Thunderbird message list to always display the true attachment count. An icon is shown for single attachments or all attachments deleted/detached. Tooltip preview of single attachment content and summary for multiple attachments.
TabControl
Next Unread Group (Mark All Read)
Adds a Group button, marks current newsgroup or folder as read and moves to the next unread message
PDF Viewer
Requires Restart
Opening and viewing PDF attachment file inside a Thunderbird tab
Proton Mail Toolbar Button
Adds a Proton Mail button to the toolbar. The button simply opens a new tab with the https://mail.proton.me webpage.
Mail Summaries
Requires Restart
Adds a summary of mail accounts and folders to replace the account central pane and the empty folder preview
Gather the senders !
Requires Restart
Select all the mails in a directory sent by the selected authors.
Quote Colors
Requires Restart
Quote Colors allows you to select text and background colors of different quote levels which are applied when reading or printing mail/news messages. Additionally, you can choose between graphical and traditional plain text quoting display mode.
Search for Sender
Requires Restart
Adds two items to the threadpane context menu, 'Search for this sender' and 'Search for this subject'. This basically takes the sender or subject of the selected message, copies it to the QuickSearch window and starts the search.
Simple HT Jumper
Requires Restart
A temporal simple jumper of HTML and Plan TEXT view mode on showing messages and replying messages for Thunderbird without changing the default setting.
FolderFlagsTo create your own collections, you must have a Mozilla Add-ons account.
