Install collection #1: for designed, timed, personalized bulk mailing you need extra: Mail Tweak; #2 for address book data mining you need extra: Seek and MoreFunctionsForAddressBook; #3 nice reading.
Displays icon for user agent of received mails.
Display birthdays from the Thunderbird addressbooks as events in Lightning.
Automatically fill your address books or send mass mails with e-mail addresses extracted from all your e-mails.
Removes comment, display name automatically from addresses before sending mail.
Displays a small graphic visualising the context (thread) of the currently selected email.
It is a Theme of the Mac Leopard-style which did iLeopard in a model.
This Add-on allows to have HTML temporarily allowed in the currently displayed message by only one click. When switching to another message, it'll be shown automatically again in plain text or simple html mode (if this is your default mode).
Collapse and expand quotes. Please see the extension homepage for...
This add-on provides a few new ways to keep Thunderbird clean.
MagicSLR extends functions and buttons to get and send messages. Many users missed a combined "Get/Send" button in Thunderbird. MagicSLR provides this button and more.
Maximize message pane by collapsing the thread pane. You can read a message in larger area without opening a new message window...
Thunderbird Extension: AutoSend Unsent Messages. Flushes entire outbox at regular intervals.
Adds two columns to the list of mails. One shows an indicator wether a mail is incoming or outgoing, the other shows the sender or the recipient of the mail respectively...
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