Foxmail is the most popular email client software in China. it is a muti email account management client software. the major advance is it can manage many email account in separate window.
Many Chinese use it as a replace of Microsoft outlook because outlook put all email to a single folder no matter which account it received. this is unacceptable to many people.
i had been using foxmail for several years. it is a green software that does not require install. simply copy the foxmail folder to anywhere you like and create a short cut for easy use manually.
after version 5. it seem Tencent company has bought the foxmail. they released the 6.0 in Only Chinese version.
it is ok sending/receiving email in Chinese. but it is not ok for english mail. i think it inserted some unknow code while reply to mails because the people who speak English received my email in bad code.

look at what one of the English speaker received below:

Your last email did not come through clearly. Please resend your email. We will then be able to assist you.

Have a nice day!

Sincerely,
Amanda E.
>
> aGksDQpwbGVhc2UgY2FuY2VsIHRoaXMgZG9tYWluLiB0aGUgbGFzdCBmb3IgZGlnaXQgaXM6IDk0
> NTcNCg0KdGhhbmsgeW91IQ0KDQoNCi0tLS0tLS0tLS0tLS0tLS0tLQkJCQkgDQphbDI1QHNvaHUu
> Y29tDQoyMDA3LTEwLTI1DQoNCi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t
> LS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0NCreivP7Iy6O6SVBPV0VSDQq3osvNyNXG2qO6MjAwNy0x

Yes, the mail content can not be seen but some meaningless character. it happend to not only one mail.

fortunately, it is possible to flash back your 6.0 Chinese version to 5.0 English.
by uninstall the Chinese foxmail 6.0 then reinstall the Foxmail 5.0 English. the emails still there in the 5.0 inbox. nothing lost.

expecting a 6.0 english version...