Hello-
Did you email it as an Attachment or as content in the email message? It
sounds like the latter, in which case you cannot directly change the content
of _any_ email message, even if you sent it to yourself.
Use your email client's Save As feature to save a copy of the message in an
editable format, such as RTF, text, etc. You will probably lose the
formatting, but the content should be fine.
In the future, make sure to send as an Attachment & at the receiving end
save the attachment to do your editing in. Do Not just double+click the
attachment icon in the email message & go to work, or you will most likely
lose everything you do. Save your changes in the saved copy, then email it
back to youself at work if necessary.
HTH |:>)