I also like the idea of a checklist at the top of emails, as suggested in Inbox Zero[1]:
This email is: [ ] actionable [x] fyi [ ] social
Response needed: [ ] yes [x] up to you [ ] no
Time-sensitive: [ ] immediate [ ] soon [x] none
I've never actually used them myself, but they seem like a great idea if you could avoid getting lynched for using them. I don't think they would go down particularly well in a lot of offices. (I also dislike the wording used, but that's a nit-pick more than a valid criticism.)EOM is pretty superfluous, though -- it's clear from the fact that there's no more text that I've reached the end of the message.
[1]: http://www.43folders.com/2005/09/19/writing-sensible-email-m...
Originally the idea was to put EOM at the end of the subject line when the whole message fit in the subject. That way you didn't have to 'open' the email. Never made much sense to me, since the process of 'opening' an email doesn't cost more than the effort to select the subject, but maybe it depends on the email client - I can see how one on a 800x600 screen may use an email client that shows the message list in one screen, and the body in another.
I'm one of those who ignores (or rather, doesn't respond to) more emails than I should. But if it's something really important then people will send me a second email with clear instructions. And after a while they'll learn to do so in the first email.
I've tried, without success, the `ignore until clear' tactic, but it tends to result in me getting the blame for not replying.