[pandas] Remove exception data from another dataframe

import pandas as pd


EXCLUDE = pd.DataFrame({'email':['a@g.com','d@g.com']})
USERS = pd.DataFrame({'email':['a@g.com','b@g.com','b@g.com','c@g.com','d@g.com']})

df_result = pd.merge(USERS, EXCLUDE, how='outer', indicator=True)
df_result[df_result._merge == 'left_only'].drop(labels=['_merge'], axis=1)