Rated 4 out of 5 stars

Really a lifesaver for situations when TB's built in "auto-charset-fix" fails miserably and - "thanks" to the devteam decision to remove charsets selection menu - you're left with a garbled mail message. In my case I receive a lot of messages coming from various cron jobs which might contain text in any of CP-1251, KOI8-R or Dos/IBM codepage 866 encoding. Updating huge codebase among 100+ boxes to convert all the text output sent to UTF-8 is not a viable solution here so this extension is the life saving grace to be able to properly read such mails.

There's a problem though: in recent days this extension started to cause problems with TB menus: as soon as I try to open charset selection sub-menu - half of all other menu items change their state to "disabled" (including all items in charset selection sub-menu) and I'm left with non-working TB menu having to restart TB to get it fixed. Other than this annoying small bug extension was working fine and I was using it on a daily basis.

Kudos to author for such a useful piece of software!

This review is for a previous version of the add-on (1.1.1). 

As per the description, since TB 91.3.2 the menu items are all disabled, since automatic repair is the only option that's left.

That other menu items are disabled is a bug, fixed version 1.1.2.
Please contact me via e-mail for another suggestion.