Are you seeing something like

a@b.com#http://a@b.com

in your merge results?

If so, I would guess that your e-mail address is stored in a hyperlink field
in Access, in which case you will either need to store it using an ordinary
text field, or change your query so that it extracts the text in the
hyperlink field before the # (you can do this by altering the SQL in your
Access query, but first let's establish what is going wrong).

If not, can you describe exactly what your merge field contains and exactly
what result you are seeing (e.g. do you literally see the e-mail address
repeated, or is there space between the two copies, etc.) Also, it would be
useful to know which version of Word/Access you are using.

--
Peter Jamieson - Word MVP
Word MVP web site http://word.mvps.org/