consulta mysql

[karpoj23]

Buenas tengo esta consulta:

select a.email,a.id,b.group_name,a.group_id from email_users a, email_group b where a.email like '%p%' and a.group_id=b.id and group_id<>4 and a.email not in (select email from email_users where group_id=4)


pero quiero ademas q cuando la haga me sake los distintos emails he probado con:

select distinct(a.email),a.id,b.group_name,a.group_id from email_users a, email_group b where a.email like '%p%' and a.group_id=b.id and group_id<>4 and a.email not in (select email from email_users where group_id=4)

select a.email,a.id,b.group_name,a.group_id from email_users a, email_group b where a.email like '%p%' and a.group_id=b.id and group_id<>4 and a.email not in (select distinct(email) from email_users where group_id=4)

Pero ninguna d las 2 funciona, como se podria??