How to send mail in Python on linux server via "mail"?

Question

I'm trying to send mail on an event trigger from python on a linux server. The server already has mail installed and I have my code like so:

import subprocess
subprocess.call(["mail","-s Hello there", "[email protected] < 
this_text_document.txt"])

Feel as if I am blind as a bat here. Receive perpetual loading. Upon interrupt receive this: "No recipients specified ... message not sent" Please send help.

Answer 1

this will work:

def SendMail(Subject: str, Body: str):
    body_str_encoded_to_byte = Body.encode()
    return_stat = subprocess.run([f"mail", f"-s {Subject}", "[email protected]"], input=body_str_encoded_to_byte)
    print(return_stat)