7.3 mail system

The 7.3 mail system!

The 7.3 mail system, also known as the "7.3 protocol" or "7.3 mail protocol", is a set of rules and standards for sending and receiving electronic mail (email) messages. It was developed in the 1980s and was widely used until the mid-1990s.

Here are some key features of the 7.3 mail system:

1. Format: Email messages were stored in a flat file format, with each message consisting of a header and a body. The header contained information such as the sender's and recipient's email addresses, the subject, and the date and time of sending. The body contained the actual message text.
2. Commands: The 7.3 mail system used a set of commands to manage email messages. These commands included send, receive, delete, list, and status.
3. Protocols: The 7.3 mail system used two main protocols: SMTP (Simple Mail Transfer Protocol) for sending email messages and POP3 (Post Office Protocol version 3) for receiving email messages.
4. Email addresses: Email addresses were simple and consisted of a username followed by an @ symbol and a domain name (e.g., [email protected]).
5. Message size: Email messages were limited to a maximum size of 7,200 bytes (7.3 kilobytes).

The 7.3 mail system was widely used in the early days of email, but it had some limitations. For example, it did not support attachments, and email messages were limited in size. As email usage grew and became more complex, the 7.3 mail system was eventually replaced by newer protocols such as MIME (Multipurpose Internet Mail Extensions) and SMTP (which is still widely used today).

Do you have any specific questions about the 7.3 mail system or email in general?