To customize the message settings, click on Advanced, Tracking Settings at the message editor.
Mail Format
The format of your message, you could choose plain text, HTML or both.
Mail MIME Type
The MIME type for encoding your email messages, Base64 is recommended.
Mail Priority
The priority of your message.
Request read receipts
To be notified when the recipient opens your message.
Email Marketer Business Edition could track the behavior of your recipients with the assist of tracking service. To enable tracking for the project, please click Track the message opens and hyperlink clicks and click OK to apply.