1) Choose the correct addressee list.
The "EntireBuilding" mail alias is supposed to be used for things like someone leaving his lights on in the parking garage or a car blocking a delivery truck or free coffay and cake at 4:15 this afternoon. The fine people of $SupermarketChain, the schlubs at $FinanceCo, the weirdos who sniff glue at $FurnitureOutlet and the various building staff don't give a shit about our software.
The "EntireMegaCorp" mail alias is for things that interest all of us, like the free coffay but only for MegaCorp employees. Since 97% of us have nothing to do with your very specialised application and 84% of us can't touch it for security reasons there's little justification in filling my fucking mailbox. Idiot.
The "MySmallGroup" mail alias exists for a good reason. Use it.
2) Err on the side of caution.
When one considers our craptastic mail system one is quite justified in concerns that a mail didn't go through. There is a right way and a wrong way to deal with this.
The Right Way:
1) Wait 15 minutes for it to be delivered to you as well
2) Check your Webmail account (which is more reliable than the POP-3 system) to see if a copy of your mail was delivered to you.
3) If, after 30 minutes you still don't see it in your Webmail (having refreshed it from 15 minutes ago), then re-send it.
The Wrong Way:
1) Send the mail.
2) Send it a second time immediately.
3) Send it a third and fourth time five minutes later.
4) Send a follow-up mail asking people to please reply if they got the last mail since you forgot to add a return receipt each of the four previous times.
3) Consider your content wisely.
There is a right way and a wrong way to highlight points you wish to make when you want to differentiate the importance of those lines.
The Right Way:
1) Outline format
2) If it is utterly impossible to get your info across otherwise, font size changes
The Wrong Way:
Three different fonts
Multiple font sizes on the same line
Four different colours
Dingbats and smilies
And while I'm on the subject, yes, I know we're expected to use big graphics but including them is not a requirement. Megacorp is quite proud of its ubiquitous and very expensive logo. While it's not necessary to send the graphics, they can be included. There is a repository and creation template. But if you're unable to find the desired graphic, do not start searching the Intartubies for 800MB animated GIFs like Judy does. Judy is a secretary. You are not. Judy is bubbly. You are not. Judy's job is to be happy and perky. Yours is not.
Four mails, each 7MB, all looking considerably less professional than a 14-year-old's MySpazz page. Half of us had to log into the goddamned Webmail client just to delete that shit since it put us over quota, at which point our standard POP-3 mail clients fail.
And no, that's not the end of it. You'd be disappointed if it was, so here's the punchline: The product being discussed: