Scripting Suite

Supported verbs as of version 1.2.1

• getAddress v : Returns the address of selected email in the RFC-5322-compliant message ID format
• getFrom v : Returns the sender of selected email in the format name, address
• getSubject v : Returns the subject of selected email
• getPreview v : Returns the preview of selected email
• getBody v : Returns the body text of selected email

Or use the Javascript equivalents, getaddress method etc.

 

An example:
tell application "FMail2" getFrom end tell
would return the sender information.