Hallo Kevin,
I recently had this happen to me too, fortunately only for one message.
In my case, the option under "Tools/Options/Outgoing Mail/Messages and Replies/Use MIME features" for some reason was OFF, whereas it should normally be ON. (Thank you Paul Whelan). In addition, I had created the message partly using Copy/Paste and this had set "Rich Text" on. This can be prevented by "......./Message Formatting/Always paste plain text...." (Thank you Tony Crawford).
Best wishes
Gerald Corbett
<p>Hallo Kevin,</p><p>&nbsp;I recently had this happen to me too, fortunately only for one message.</p><p>In my case, the option under "Tools/Options/Outgoing Mail/Messages and Replies/Use MIME features" for some reason was OFF, whereas it should normally be ON. (Thank you Paul Whelan). In addition, I had created the message partly using Copy/Paste and this had set "Rich Text" on. This can be prevented by "......./Message Formatting/Always paste plain text...." (Thank you Tony Crawford).</p><p>Best wishes</p><p>Gerald Corbett
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