def clean_opm_license_list(df):
    """This function takes the OPM Granted Licenses list (as a DataFrame) as input and cleans various aspects of it before returning it. 

    Parameters
    ----------
    df (DataFrame) : OPM Granted Licenses list

    Returns
    -------
    df (DataFrame) : df after being cleaned.
    """
    df = df[ df['Removed'] == False ]
    df['Email'] = df['Email'].str.lower().str.strip()
    return df