Applescript help: mail this domain (but don't mess up my html signature!)

Question

I currently use this script to email the current domain in safari in mail, the script launches a new mail and inserts the domain in the body field.
However, the script replaces my html mail signature. And if I add my sig back in, it is totally wonky, I'm guessing it has something to do with some weird formatting?
Any thoughts?
tell application "Safari"
set this_URL to the URL of document 1
end tell
tell application "Mail"
activate
set this_message to make new outgoing message with properties {visible:true, subject:"Interesting URL", content:(this_URL)}
end tell
----------

Answer 1

Andy, thanks for your reply. I was just going to post that I seem to have solved the problem.
What I ended up doing was to first back up the mail folder. Then I created some Saved Mail folders and did a search to find the e-mails that weren't displaying and put them into a saved mail folder. Then I went in and deleted the e-mail account that wasn't displaying mail. (It would show the number of new messages in the red circle, but didn't show any messages being in the inbox when you clicked on the account.) Anyway, after trying to backup everything and deleting the problem e-mail account, I rebuilt the inbox and then re-entered the information for that account to set it back up. After I did this, messages come into the account just fine and show up just like they should.
The file structure looked to be the same as what your finder image shows. When I did the search which let me find the messages, all I noted was that it would say they were either in the Inbox, Sent Mail, Trash, etc. But, once I had them showing in the search window, I could copy them to a saved mail folder and view them without a problem.
Since this wasn't my computer, I'm not sure if anyone tried to change account settings, but not as far as I know. They just said it happened about 2-3 weeks ago.
Thank you for your help. I guess it's going to be one of those computer things that you don't know why it happened, but at least I know what I did that seems to have fixed it.