epostalar

Epostalar are electronic messages exchanged over the Internet between users or systems. They are created, transmitted, stored on mail servers, and retrieved by mail clients. The term covers personal and organizational correspondence and can include text, images, and attachments.

Origins of electronic mail date to the early days of the Internet, with early experiments in the 1970s and a landmark in 1971 when Ray Tomlinson implemented the first system able to send networked electronic mail using the @ addressing format. The technology expanded rapidly in the 1990s with the growth of the public Internet and the emergence of webmail and desktop clients.

How epostalar work: a user composes a message in a client, which submits it to an outgoing mail server using the Simple Mail Transfer Protocol (SMTP). The message is routed between mail servers via DNS MX records until it reaches the recipient’s server, where it is stored in a mailbox. The recipient retrieves the message with a mail client using IMAP or POP3. Attachments are carried as part of a MIME-encoded body.

Key components include the header (From, To, Subject, Date, Message-ID), the body, and any attachments. Emails can be plain text or HTML and may include embedded resources.

Security and privacy considerations include encryption of transport with TLS, and optional end-to-end encryption through standards such as S/MIME or OpenPGP. Users must also contend with spam, phishing, and malware risks, and with privacy concerns related to data handling by providers.

Today, epostalar remain a fundamental medium for personal and professional communication, though they coexist with instant messaging and collaboration tools.