I have developed a bad habit of not checking my emails at work very closely before hitting the "send" button. I get away with this because the spell-check process then kicks-in, and I almost always have some typo, acronym, or some random piece of data that is flagged as a misspelling. This gives me a second chance to review the email, and correct things like using "simple" instead of "simply", "of" instead of "if", and the like.
If the next version of Lotus Notes I use has live spell-check (with those red underlines) instead of a separate spell-check process, I'll have to change my habits or lower the standards of my outgoing emails.