Essential Thunderbird Add-ons
I decided that it was about time that I wrote my list of Thunderbird add-ons that I use daily.
- compactfolder (needs updated to be compatible with Thunderbird 2)
Gives you a toolbar button equivalent to the Purge button in Outlook Express, for use in IMAP folders - Copy Sent to Current
Allows your replies to emails to be automatically placed in the same folder where the message is that you're replying to. Useful for keeping conversations about specific projects all together - Dictionary Switcher
Allows you to quickly switch between different spell checking dictionsaries that you have installed. - Display Quota
Displays how much of your quota you are using, for IMAP accounts where your disk space is limited
https://addons.mozilla.org/en-US/thunderbird/