Generally, I proofread every email I send out, whether it be at work or personal in nature. Spell check cannot be relied upon. Most of the time I catch everything, but no one is perfect. I’ve just looked back on an email I sent (work-related, which makes it even better) and realized that rather than typing “Hello Jon,” I typed “Hell Jon,” instead.
It’s kind of fun that the letter “o” (or lack thereof) can turn a somewhat formal and cordial greeting into an aggressive statement of profanity. I’m almost wishing there was an “!” instead of a “,” to add to the effect.