How to fix ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1056)?

I am trying to send an email with python, but it keeps saying ssl.SSLError: [SSL: WRONG_VERSION_NUMBER] wrong version number (_ssl.c:1056). Here is my code:

server = smtplib.SMTP_SSL('smtp.mail.com', 587)
server.login("[e-mail]", "password")
server.sendmail(
"[e-mail]", 
"[e-mail]", 
"email text")
server.quit()

Do you know what is wrong?

Answer

The port for SSL is 465 and not 587, however when I used SSL the mail arrived to the junk mail.

For me the thing that worked was to use TLS over regular SMTP instead of SMTP_SSL.

Note that this is a secure method as TLS is also a cryptographic protocol (like SSL).

import smtplib, ssl

port = 587  # For starttls
smtp_server = "smtp.gmail.com"
sender_email = "[e-mail]"
receiver_email = "[e-mail]"
password = input("Type your password and press enter:")
message = """
Subject: Hi there

This message is sent from Python."""

context = ssl.create_default_context()
with smtplib.SMTP(smtp_server, port) as server:
    server.ehlo()  # Can be omitted
    server.starttls(context=context)
    server.ehlo()  # Can be omitted
    server.login(sender_email, password)
    server.sendmail(sender_email, receiver_email, message)

provided thanks to the real python tutorial.