Rated 4 out of 5 stars
Thanks for a great add-on!
I have just installed it, so I cannot write a proper review, but seeing it works with mixed Hebrew/English text is already of great use for me.
I did find what I believe to be a bug though. Unfortunately I couldn't find a direct way to contact the developer a possible bug. Hopefully you will read it here:
When writing RTL message, the Tab option (moving chosen text inwards) is reversed, shown as LTR tab. It works, but confusing.