Thanks for trying to help me. Unfortunately, somehow we are talking to different things. I do know how to attach the email, I reply to, to my reply, which is covered the link you gave me. No problem there. By the way, I almost never use it. My emails are mostly not business hence, people remember what they wrote to me.
Here is my problem: Let's say, I send an email to myself. It is an original, not a reply to anything. When I click the SENT button, it sends it, but automatically creates a copy of it and attaches to the email as an attachment. I already see it in the SENT folder. When arrives to me (in a few minutes) there it is, the attachment, which is nothing but a copy of the email. -- It is annoying to people to receive an email with an attachment identical to the email.
So, what causes it. It just started some time ago. For over ten years (on several computers) I did not have this problem.
Thank you again for your help. Sincerely, Tom.