https://www.mozilla.org/ja/firefox/new/ https://www.mozilla.org/en-US/firefox/66.0/releasenotes/ Security vulnerabilities fixed in Firefox 66 - Mozilla Foundation Security Advisory 2019-07

https://www.thunderbird.net/ja/ https://www.thunderbird.net/en-US/thunderbird/60.6.0/releasenotes/ 追記 Thunderbird 60.6.0 64ビット版 で日本語ファイルを送るができるか試してみた https://download.mozilla.org/?product=thunderbird-60.6.0-SSL&o…