Message Composition
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ThunderHTMLedit
Thunderbird HTML editor. This add-on adds a HTML tab to the composition window where you can see and edit the HTML source of the message.
7,366 users -
Signature Switch
Switch the signature on/off or choose a new one from your predefined set.
63,117 users -
Grammar Checker
Checks grammar using LanguageTool.
6,666 users
Most Popular See all »
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77,423 users
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63,117 users
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62,390 users
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25,453 users
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Allow you to use HTML files as templates for mail. Also allow custom template in replies or forwarded mail!23,147 users -
21,937 users
Top Rated See all »
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277 users
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7,366 users
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77,423 users
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21,937 users
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5,522 users
Recently Added See all »
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207 users
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76 users
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1,405 users
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10 users
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72 users
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It prevents you accidentally sending an email to a large number of recipients without hiding their addresses from each other by using BCC.282 users
See all 117 extensions in Message Composition »
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