Rich Text Format (RTF) is a file format that lets you exchange text files between different word processors in different operating systems. For example, you can create a file using Microsoft Word , save it as an RTF file (it will have an ".rtf" file name suffix), and someone using a Mac, or different word processor will be able to open it.

In addition, when sending a graphic or photo do not place it in your document when saving RTF. Rich Text Format and images do not mix. They cause the file to get ridiculously large. You will need to send your graphic or image as a separate attachment when "saving as" RTF. Large files will not attach to emails. Most email "boxes" will only allow a 1 megabyte attachment.

In any word processing program click on "File", then click on "Save As". In the "Save As" window open the bottom drop-down window and choose Rich Text Format (*.rtf).

Do not just type .rtf after the .doc or .wpd or .wps (filename.doc.rtf is wrong)

You will have to replace the existing word file extension with .rtf