AppleScript to Send Again E-Mail Message in Sent Folder

Question

For reasons more complicated than interesting, I want to use Send Again to reply to incoming e-mails that meet certain specific conditions. I've figured out how to extract the sender's e-mail address from the message, but I can't figure out how to select a previously sent message and resend it to the new recipient. I'd really appreciate any help. Thanks.

Answer 1

Here's what I've got so far:
tell application "Mail"
set theMessage to selection
set the thisMessage to item 1 of the theMessage
set theSender to sender of the thisMessage
set theAddress to extract address from theSender
set sendAgain to 1st message of sent mailbox whose id is 343445
-- Need to tell Mail to Send Again the message sendAgain
set sender of (message sendAgain) to theAddress
-- Need to send message
end tell
I get the error on the last line: "Mail got an error: Can’t set message (message id 343445 of mailbox "[Gmail]/Sent Mail" of account "User Name") to "[email protected]".