What CSV formatting should I use for a List Match Audience?

The formatting guidelines for List Match Audience data is as follows:

• Your customer audience data must be in a CSV file.
• No header is necessary.
• In each row, include a single email address that includes:
  • The email's domain name
  • No spaces or quotations around the email
  • Example: [e-mail]
• CSVs should have at least 200 emails for optimal targeting.
• CSVs can have a maximum of 4 million rows per file.
• You may upload private customer data that you’ve already hashed using the SHA256 algorithm. Any customer data that you upload in plain-text will be hashed using the SHA256 algorithm locally in your browser before any customer data is transferred to our servers.