Performance Analysis of an Email Communication System using SMTP and POP3 Protocols in Cisco Packet Tracer

The proposed email communication system was successfully designed and implemented using Cisco Packet Tracer based on a client–server architecture. The email server was configured by enabling the Simple Mail Transfer Protocol (SMTP) and Post Office Protocol Version 3 (POP3) services to facilitate reliable email transmission and retrieval. The client computers were configured with valid user credentials and server information, enabling authenticated communication within the Local Area Network (LAN). Experimental validation confirmed the successful exchange of email messages between the configured clients, demonstrating the correct operation of the implemented protocols and network services. The proposed system provides an effective platform for understanding email server configuration, client–server communication, and application-layer protocols in a simulated networking environment. Furthermore, the implementation serves as a practical educational model for networking laboratories and can be extended in future work by incorporating advanced security mechanisms, encrypted email communication, and enterprise-level mail management features.

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