When creating an email content type you will need to map data fields in the Email List configuration in WorkPoint Express Settings.
The data types are as follows:
Attachment: boolean
Subject: text (255)
From: text (255)
From address: text (255)
From address Combined: text (255)
To: text (255)
To address: text (255)
To address Combined: text (255)
Cc: text (255)
Cc address: text (255)
Cc address Combined: text (255)
Received: Date and Time
Sent: Date and Time
Size: text (255)
Sensitivity: text (255)
Message class: text (255)
Message ID: text (255)
Conversation topic: text (255)
Conversation index: Multiple lines of text
Body text preview: text (255)