Solved. E-mail client problem. Used alternative email node as suggested. I forgot to use the one time password for node red to send email via Yahoo. (Needs Yahoo generated one off password for Node Red) The node-red-contrb-email-out node would send the e-mail with the Topic but not the message.
Once I'd switched to the email node as suggested, and entered the one off password, Bingo!
Thanks to all for your guidance.
Kris.
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