德国免费加密信箱 @tutanota.com
tutanaota是一款非常不错的加密信箱，服务器位于德国汉诺威，免费版本只有1G储存空间，存放文字信息完全够用，可以发送加密邮件，收件人只有在输入密码后才能浏览加密邮件。
tuta nota两个单词源自拉丁文，意思是 安全 信息
评价：非常不错
注册地址：https://tutanota.com
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