Final answer:
Email can be sent and received on a variety of devices using the Simple Mail Transfer Protocol (SMTP).
Step-by-step explanation:
Answer:
Email can be sent and received on a wide variety of devices, including cell phones, PDAs, laptops, and desktop computers because of the Simple Mail Transfer Protocol (SMTP).
SMTP is a protocol that enables the transmission of email over the internet. It allows email to be sent from a sender's device to the recipient's device through different networks and servers, regardless of the type of device being used.
SMTP works with other protocols, such as the Internet Protocol (IP), which is responsible for routing the email packets across the internet, and the Internet Service Provider (ISP), which connects the sender and recipient's devices to the internet.