[Mail] Chinese encoding problem

[Mail] Chinese encoding problem

Since a week or two ago, some (but not all) Chinese emails have been messed up in the webmail panel.
The concerned emails can be displayed correctly in Microsoft Outlook after downloading via POP3.

After some testing, I found that Traditional Chinese email  in UTF-8 can be displayed correctly in Zoho webmail panel. However, Traditional Chinese email  in Big5 encoding cannot be displayed correctly. Even by clicking "message garbled" icon and then change the browser encoding to Big5, the message still does not display correctly.

Please fix this issue with Big5 encoding asap as we are doing business in Chinese.

Thank you !