Instead of having the e-mail display as:
Could we do something like: Don't at contact dot me, where the bbcode automatically displays the @ & . as words when you use the code?
I guess it really depends on how page parsers dig for e-mail addy's. If they're looking at just the text display, the second form would work perfect to defeat spam aggregators, but if they are reading the page source, well, then it doesn't matter how you do it.
Using the ASCII/HTML symbol codes to replace the @ and . usually works pretty well.
Hit the dropdown, there is a new <email> board code.