Review for Junk Mail ByeBye by Firefox user e46d9f
Rated 4 out of 5 stars
It is working correctly with respect to Japanese emails.
As mentioned in the add-on descriptions, many add-ons seem to be unable to handle multilingual e-mails other than Japanese.
Those who say it does not work should read the description first.
To create your own collections, you must have a Mozilla Add-ons account.