Emails are a form of digital communication that allows people to send and receive messages over the internet. They can include text, images, and attachments, making them versatile for personal and professional use. Users typically access their emails through platforms like Gmail or Outlook, which provide tools for organizing and managing messages. An email address is required to send and receive emails, usually formatted as "username@domain.com." Emails can be sent instantly, making them a quick way to communicate. They also allow for easy record-keeping, as users can store and search through their message history.