One of the best features of e-mail is that you can attach other documents and files to your messages.

Avoid using odd file formats, or expecting that the receiver will install a program just to read/access your document.

Common formats you can use:

	.jpg or .jpeg Photos and images
	.pdf Adobe Acrobat Documents
	.doc Word Documents
	.zip Compressed/bundled collection of files. Better than attaching 20 separate files.

Formats to avoid

	.bmp Uncompressed image format - large filesize. Convert it to a jpg in Microsoft Paint or equivalent.
	.exe program file - often used to make viruses, so many e-mail programs will block it
	.unknown If you don't recognise the format, don't send it or open on that you receive. Could be dangerous.

Remember that most people have a limit on both the size of individual messages they can receive, along with the total size of their message inbox. Therefore, they won't appreciate you sending them huge messages.

Never send an attachment over 1MB in size, unless you are sure they can receive it.

If you've got a collection of files or photos, consider uploading them to a common network location or somewhere online. Then, you can just send them a link.

Finally, remember that your message can be Forwarded on, and Forwarded on again. So just remember that anything you send may be sent to and seen by anyone.