arg.py

import argparse


def send_email(email="default@mydomain.abc"):
    # All your email sending logics goes here
    print(f"Sending email...: to {email}")


if __name__ == "__main__":
    parser = argparse.ArgumentParser()
    parser.add_argument("-e", "--email", help="Email to send")

    args = parser.parse_args()

    if args.email:
        send_email(args.email)
    else:
        send_email()

email_dec.py

import time
from schedule import repeat, every, run_pending


@repeat(every(10).seconds)
@repeat(every(5).seconds)
def send_email():
    # All your email sending logics goes here
    print("Sending email...")


while True:
    run_pending()
    time.sleep(1)

params.py

@repeat(every(10).seconds)
@repeat(every(5).seconds, email="thuwarakesh@abc.com")
def send_email(email="default@mydomain.abc"):
    # All your email sending logics goes here
    print(f"Sending email...: to {email}")

schduled_email.py

import time
import schedule


def send_email():
    # All your email sending logics goes here
    print("Sending email...")


schedule.every().day.at("14:45").do(send_email)

while True:
    schedule.run_pending()
    time.sleep(1)