This is the third post in a series for developers working on email-enabled applications. View Part 1 and Part 2.

In the first part of this series, we covered the components and protocol that comprise email. In the second post, we explored the anatomy of an email message, MIME, and send email using SMTP.

In this post, let’s cover advanced topics of SMTP. In future posts, we’ll look at retrieving and processing messages using POP3 and IMAP.