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Add extra features and styles to make Thunderbird your own.

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Featured Extensions

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Dark Fox Featured

My dark version of the Firefox logo.

Rated 5 out of 5 stars (607)
20,947 users

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Two little birds Featured

Rated 5 out of 5 stars (125)
26,963 users

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Thunderbird Suave Featured

Rated 4 out of 5 stars (41)
26,507 users

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Airmail Featured

Rated 4 out of 5 stars (17)
2,509 users

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Fresh Green Leaves Featured

Rated 5 out of 5 stars (65)
5,023 users

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Japanese Tattoo Featured

Colors and accent adjusted

Rated 5 out of 5 stars (84)
2,034 users

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Blur (violet, orange, green) Featured

Blur, violet, orange, green.

Rated 4 out of 5 stars (8)
1,409 users

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