One of my pet peeves is when someone sends me an email attachment that is unnecessarily large, slowing download time. One of the biggest offenders is PowerPoint slides. The army has falsely taught its ranks that this is an appropriate application for creating fliers. Let me be clear – they use it in the absence of a more appropriate application! Using this method creates an unnecessarily large attachment that many people can’t even open. If you must use PowerPoint to create your flier, learn how to convert your file to a PDF (Portable Document Format) before distribution.
Here are a few more thoughts to consider before hitting the Send button.
Ask Before You Send Huge Attachments
Don’t clog email systems without permission.
Resize Pictures to Handy Proportions Before Inserting Them in Emails
When your photos look good in your email, you look good, too! Learn how to make sure your images are not larger than screens and mailboxes by resizing them.
Keep Your Signature to 5 Lines of Text
“Signature” is a synonym for brief and unobtrusive — or at least it should be, because overly long signatures in emails are an annoyance.
No Need for Street Addresses in Email Signatures
Come visit me, everybody! Unless you want everybody and the whole world to know where you live, don’t include your street address in your email signature.
Source: About.Com