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CloseReview for Greek (el) Language Pack by diastasi
Rated 5 out of 5 stars
Χρησιμοποιείστε το el.xpi που θα βρειτε εδώ
https://ftp.mozilla.org/pub/thunderbird/releases/60.4.0/win32/xpi/
και θα ξαναγινει Ελληνικο το Thunderbird
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