Learning Goals

• Describe the major components of an email system, including user agents, mail servers, and message transfer agents.
• Explain how email messages are composed, addressed, transmitted, stored, and retrieved across networks.
• Differentiate email transfer and access functions performed by standard mail-related protocols.
• Interpret the path of an email from sender submission to recipient delivery and mailbox access.
• Identify common reliability and security concerns in email communication, including spoofing, spam, and message confidentiality.