when a user logs in, there is a show region on the profile page that will display if the email is not varified:
<?php if(!WA_Auth_RulePasses("Email Confirmed")){ // Begin Show Region ?>
<p>Your email address has not been verified.</p>
<form name="form1" method="post" action="">
<input type="submit" name="verify_button" id="verify_button" value="verify">
</form>
<?php } // End Show Region ?>
you could change the messaging here.