Here are a number of articles for reference when you want to email from
Publisher:
http://office.microsoft.com/en-us/assistance/CH062524821033.aspx

As you know you can only send a single page, not four. If you must send the
content of all four pages, then you need to lengthen page 1, and copy and
paste the content from your other three pages on there, and then delete
those extra pages. Probably the easiest way to do that is to convert your
print document to a web document, and the page length will automatically be
increased enough to contain all your content. Reference: Convert Your
Publisher Newsletter for Use on the Web:
http://office.microsoft.com/en-us/assistance/HA010563151033.aspx

Now, you should realize that if you convert a multipage print newsletter
into a single page, the only way you will be able to "embed" it in an email,
is as an image. What you will find is a very large email message, that can
easily exceed a meg in size. Ask yourself if you want to sending out that
large of email, or if you would want to scroll from side to side in order to
read your print formatted message. Count me out...and probably most people
you would send it to that have dial-up modems.

The better way of sending a 4 page newsletter is to send it as a PDF file
that you attach. It will be a fraction of the size of the image that you
embed. If you don't have a tool to convert it, www.primopdf.com  is a source
for a freebie.

If you must send an embedded publisher file, then start with a email
formatted newsletter, which will be a short one page document, that can be
sent in HTML format rather than as an image. Then use the "read more"
hyperlinks to link to the additional content on your website. That is the
way it was designed to be used.

I think it is a mistake to try to send a document that is designed as a
print document as an embedded email message. They are two different medias.
Just my two cents worth...

DavidF