V. A. Shiva Ayyadurai, Dr. E-Mail: Inventor of Email, History of Email, Free EMail Tips

Use attachments sparingly. If the recipient has no need to view the whole document or edit it anyway, just use the text of the document as part of your E-Mail body. Attachments can be very heavy and have the potential to send an E-Mail system crawling on its knees. Also make sure to have effective anti-virus so that the documents you send are not infected.