Building your own SMTP server helps you understand how emails are sent and received. It allows you to learn the important protocols like SMTP, IMAP, and POP3.
Authentication methods like DKIM, SPF, and DMARC are crucial for ensuring that your emails are delivered successfully and trusted by recipients. They help prevent spam and email spoofing.
Using Go to create your SMTP server involves setting up commands that handle email transactions. You will learn how to manage sender and recipient details, authenticate users, and send emails efficiently.