Ласкаво просимо до додатків Thunderbird.
Додайте функції та стиль, щоб зробити Thunderbird своїм.
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(Technical note: This extension is essentially a userChrome.css packaged into an extension format because, for some people, installing an extension is easier than locating and editing userChrome.css. For people who prefer to use userChrome.css, a copy of the CSS overrides used by this extension is available for download from the extension's homepage.)