I have registered 37210 for a PIN and see that that is a later addition.
From my basic translation of the commands, i thought the sequence of operation would be :
Connect to 11170
Enter PIN
then follow the rest of the sequence from Post#88>
"Simply log in to 11170 and enter “send mail”. You will then be asked for the recipient and subject.
The message is then entered in exactly the same way as with a broadcast transmitter and is completed with "+++" (Copy & Paste

. Instead of the "@" sign, "(at)" is used."
However when i enter the PIN, i just get a repeated command (which to me looks like Enter a valid PIN number).
Is there a sequence of operation for the completed 'post testing' email system? I have read through the last few pages of this thread and thought i had understood it but i must be missing something.
Cheers
John