Rated 5 out of 5 stars

I only really came to appreciate it fully when it wasn't working due to an update in Thunderbird. Your quick reply and update is much appreciated!
This is an absolute must have for anyone who needs right-to-left support!
Thanks, תודה and شكرًا

This review is for a previous version of the add-on (0.15.2).  This user has a previous review of this add-on.

Thank you for the kind words. TBH, Thunderbird should long ago have introduced proper support for RTL languages - beyond what my extension offers; but for, well, reasons, that hasn't happened.

See also: https://bugzilla.mozilla.org/show_bug.cgi?id=464436
and
https://bugzilla.mozilla.org/show_bug.cgi?id=119857