Python uses Twisted for email transmission and collection, supporting SMTP, POP3, and IMAP protocols

Preparation work: 1. Ensure that you have installed the Python interpreter. 2. Install Twisted library: Run the 'pip install twisted' command from the command line. Dependent class libraries: When using Twisted for email transmission and collection, modules such as' twisted. mail. smtp ',' twisted. mail. pop3 ', and' twisted. mail. map 'are required. Sample code: python from twisted.internet import defer, reactor from twisted.mail.smtp import sendmail from twisted.mail.pop3client import Pop3Client from twisted.mail.imap4 import IMAP4Client #Sending an email def send_email(): d = sendmail('smtp.gmail.com', 'sender@gmail.com', 'receiver@example.com', 'Subject', 'Hello World!', port=587, requireAuthentication=True, username='sender@gmail.com', password='password') d.addCallback(lambda _: reactor.stop()) d.addErrback(lambda _: reactor.stop()) #Receiving emails def receive_email(): d = defer.Deferred() def gotProtocol(proto): print('Logged in.') num_msgs = len(proto.list()) print('Number of emails:', num_msgs) msg = proto.list()[num_msgs-1] print('Last email:', msg) return proto.quit() def cleanup(failure): print('Logged in failed:', failure) reactor.stop() factory = protocol.ClientFactory() factory.protocol = IMAP4Client factory.deferred = d d.addCallback(gotProtocol) d.addErrback(cleanup) reactor.connectTCP('imap.gmail.com', 993, factory) if __name__ == '__main__': send_email() receive_email() reactor.run() This sample code demonstrates how to use the Twisted library to implement SMTP sending email and IMAP receiving email. You can modify the email server address, sender, recipient, subject, and content as needed. Summary: Through the Twisted library, we can easily use Python to transmit and receive emails, supporting SMTP, POP3, and IMAP protocols. The Twisted library provides a powerful set of functions and class libraries, simplifying the work of developers.