Python · Sending Email

To email an image attachment with the legacy email.mime API, which container class do you build, how are the text and image parts added, and what do all MIME part classes share?

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You want your Python script to SEND an outgoing email. Which standard-library module connects to the mail server, and which protocol does it speak?

You connect with smtplib.SMTP(host, 587), then immediately call .login(...) over the plain connection. Why is this a problem, and what step is missing?

For an encrypted SMTP connection, what's the difference between smtplib.SMTP with .starttls() and smtplib.SMTP_SSL — including the typical port for each?

What does smtp.sendmail(...) return when ALL recipients accepted the message, and how would a competent dev wrongly interpret it?

In smtp.sendmail(from_addr, to_addrs, msg), you pass a single recipient string "a@b.com" as to_addrs and it works. Then you switch to two recipients — what's the gotcha?

What happens when you run this? ``` from email.message import EmailMessage m = EmailMessage() m["Subject"] = "Hi" m["Subject"] = "Bye" print(m["Subject"]) ```

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