smtplib send email has no timestamp

[Pedroski55]

I want to send emails to customers automatically. So I am testing with just 5 email addresses to see how it works

I import these

import smtplib, ssl
import json # for a list of email addresses
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart

One test email did not get sent, the problem was:

No Mx Record Found

Must be a wrong email, because even when I tried to send from my email it bounced back!

But i noticed this: the time of the email which I sent from this laptop is the start of the computer epoch time (well, not quite):

时 间：1970-01-01 07:59:59
Time: 1970-01-01 07:59:59

My laptop shows the current time OK!

How can I get smtplib to put the current timestamp?

This sends the emails from my laptop via my QQ email OK, except for the timestamp:

with smtplib.SMTP_SSL(smtp_server, port, context=context) as server:
    server.login(sender_email, password)
    for e in email_address(customer_emails):
        print(f'email is {e} ')
        server.sendmail(sender_email, e, message)
        print(f'email sent to {r}')

I don't know why the timestamp is 1970!