Thunderbird Add-ons that I am using.
By Yu Aaron Cheng on Oct 23, 2007
To share with you what Add-ons that I am using on my Thunderbird client.
Re-use your message filters in different machines without setup them one by one every time.
Search and remove messages which are duplicate of other messages in your mail folders.
spell-checking when you write an email.
An integrated calendar for Thunderbird. - Recommendation