def METHOD_NAME(self, email_ids_file, batch_size=None):
    """
    Generate manual verification for the emails provided in the email ids file.
    Arguments:
        email_ids_file (str): path of the file containing email ids.
        batch_size (int): limits the number of verifications written to db at once
    Returns:
        (total_emails, failed_emails): a tuple containing count of emails processed and a list containing
         emails whose verifications could not be processed.
    """
    with open(email_ids_file) as file_handler:
        email_ids = [line.rstrip() for line in file_handler]
        total_emails = len(email_ids)
    log.info(f'Creating manual verification for {total_emails} emails.')
    failed_emails = []
    for n in range(0, total_emails, batch_size):
        failed_emails.extend(self._add_users_to_manual_verification(email_ids[n:n + batch_size]))
    return total_emails, failed_emails