How do i send automatic emails using custom namecheap domain?

Question

hello i just bought custom email address from namecheap. i am trying to figure out how to send emails automatically. this is my code:

import smtplib #socket
from email.mime.text import MIMEText
sender_email="[email protected]"
password = "password"
smtp_host="mail.privateemail.com"
#socket.gaierror,smtplib.SMTPAuthenticationError:
def send_mail(send_to,subject,content):
    with smtplib.SMTP(smtp_host,587) as smtp:
        smtp.starttls()
        smtp.login(user=sender_email,password=password) #socket.gaierror,smtplib.SMTPAuthenticationError:
        message = MIMEText(f'{content}')
        message['subject'] = subject
        message['to'] = send_to
        
        try:
            
            smtp.sendmail(sender_email,send_to, msg=message.as_string())
        except Exception or ExceptionGroup as e:
            print(f"E: {e}") 
send_mail(send_to="[email protected]",subject="subject",content="description here.")

but it doesn't send anything nor prints any error in console. it works fine with outlook.

what should have happened: it should send email to specified email. what actually happened: it doesn't send email nor prints anything on console.