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CardBook Featured

A new Thunderbird address book based on the CardDAV and vCard standards.

Twitter: @CardBookAddon

Rated 4 out of 5 stars (445)
65,492 users

Mail Merge

Create and Save or Send Multiple Individual and Personalized Messages from a Draft

Rated 5 out of 5 stars (226)
63,872 users

Birthday Calendar

Adds calendars containing the birthdays from your address books.

Rated 5 out of 5 stars (22)
4,412 users