Ms access SQL grrrrrr

Ms access SQL grrrrrr

I'm trying to use access to run a query. My problem is that I have 2
tables and both tables don't contain the same information. Table1 contain
userid and email address for one database and Table 2 contains login Id
and smtp address for another database. Exp... User id is billybob and
email is billybob@gmail.com. Table 2 login is billy.bob and smtp address
billy.bob@yahoo.com. Now I have a list of over 1k users but not everyone
has 2 email address. I want the list of only users who have more then 1
email address. What do I need to do.