Hi Matthew or someone else,
I tried to use the descriped Email Entry API (Http://www.collective2.com/content/how_emailsignals.htm) without any success.
In my opinion the following should work:
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To: signal@lists.collective2.com
Subject: C2 Signal
systemid=40485668
pw=xxxxx
BTO 1 @ESM9 @ MARKET DAY
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Thank you for answering.
Michael