Recently I sent an Email to The Royal Mail (via Outlook Express) only to recieve a message back to say my Email was unreadable and if I had sent it in HTML format would I please send it again, only this time in Plain Text Format.
What is the difference and if I change from the default HTML format to Plain Text will all other recipicants be able to read this format?
Everyone can read plain text format. Some email clients have been vulnerable to HTML format emails due to the way they render images and other problems. I guess this is why RM like plain text.