emailserver.tac - a toy email server.sendmail_smtp.py - sending email over plain SMTP with the high-level sendmail client.sendmail_gmail.py - sending email encrypted ESMTP to GMail with the high-level sendmail client.sendmail_message.py - sending a complex message with the high-level sendmail client.smtpclient_simple.py - sending email using SMTP.smtpclient_tls.py - send email using authentication and transport layer security.imap4client.py - Simple IMAP4 client which displays the subjects of all messages in a particular mailbox.