When a user sends an open Word document as an attachment using File, Send As,
Attachment, it correctly opens a new email message and inserts the document.
However, if the user has a signature set to display whenever they create a
new message, the signature does not appear. This occurs even when sending
through Adobe (File, Send Email).

One of the MVPs mentioned using Tools, Options, General, Email Options to
create a signature. This doesn't work.

Is there a default template used to generate a blank email? My thoughts
are, if there is a default template that generic email is made from, then I
can modify that to include the signature.