What are Popular Email File Formats & How to Choose the Right One?
Last Updated: 30 Jul, 2025
What are Email File Formats? An email file format refers to the specific structure or type of file used to store email messages. These formats dictate how email content is encoded, how attachments are handled, and how metadata such as sender, recipient, subject line, and timestamps are preserved. These formats ensure compatibility across different email clients, servers, and applications. Whether you’re backing up important emails, migrating to a new service, or sharing messages, understanding email file formats1 is essential.