In an emotional situation, I always write the email immediately, but keep it in my drafts until the next day before sending it. In many instances, I look at it the same day and say, "What the @#$! was I thinking?". There have been times that I have gone ahead and sent the email (with minor editing).

I think it depends on the situation on whether you should send them, but you should always remove the emotions from the situation -- it can only make it worse.

Regards,

J.