Rated 3 out of 5 stars

I tried this and it appears very good..
.. but I do have some caveats I'd like to share:
- The images are stored on a server, and not included in the e-mail - what happens if the server dies?
- There is no option for MathML encoding (and it would be preferable if one could fallback on images if the e-mail client does not support MathML; and
- One creates a intricate equation and it defaults to small size - you increase the font size to a larger size and the size of the image stays the same unless you alter it in another editing tab.