32 votesOffice 365 Japan Support Team commented
I would like to add the same feature request for this post.
We also have a request to improve the behavior of the double-byte character texts are garbled when uploading ".msg file".(It is displayed in a normal state for a few seconds.)
So far, the user requires to download the file once and it takes a while, therefore I hope the feature will improve to display texts for ".msg file" with no problem on the web browser even the file contains double-byte characters such as Japanese. It would be great for the user's convenience if this feature can be implemented in near future.
Thank you for your continued support.