Worse still, these editors are absolutely no use when it comes to email. There's yet more bad news. With the widespread use of proportional fonts, trying to line text up using spaces can be next to useless. This is a guide to writing mathematics using only normal symbols. Much of it is a compromise and may not be satisfactory as it can be quite hard to read.
Handwritten mathematics is still the best.
Complicated formulae should be avoided where possible. Use lots of spaces.