Transmission

So if I am using Apple Mail, do you think this line is all right ?
NAIL=/usr/bin/mailx

Hi,
I would like to receive an e-mail when a torrent is fully downloaded. I found this script in the forum :
https://trac.transmissionbt.com/browser/trunk/extras/send-email-when-torrent-done.sh
I am a total newbie and I don't get this line :

# Where "nail" is installed on your system.
# We need ...

Sorry to bother you again but it is not working for me !
I did what you said and I have this black icon on my desktop. I gave the path of this file in Transmission preferences and nothing happens when a download is completed.
Basically, I don't understand how deleting the rtf extension makes this ...

I have problems to set the path in the terminal window.
Let's say my TextEdit file is on the desktop, saved as "Script.rtf
I enter this line in the Terminal : chmod +x <Desktop/Script.rtf>
but I have this answer : -bash: syntax error near unexpected token `newline'
What did I do wrong ?
Thanks.

Thank you very much for your reply. However I must have misunderstood something because it doesn''t work for me. I paste the following lines in an applescript window and tried to execute but I have an alert message.

#!/bin/bash
mail -s <my e-mail@gmail.com> <<EOF
Subject: "$TR_TORRENT_NAME ...

Hi guys,
I am a very happy user of Transmission and I would like to use the script option on download completion. I think what I'm looking for is simple but I don't know one thing about scripting. The script would send an e-mail displaying the name of the completed torrent and the time of completion ...