import re


def verify_email(email):
    """
    This function validates the given email using regular expression.

    Args:
        email: Email to be verified.

    Returns:
        True if email format is correct otherwise False.
    """
    email_rule = r"^[a-z0-9]+[\._]?[a-z0-9]+[@]\w+[.]\w{2,3}$"
    return re.search(email_rule, email)