compose mail and hide my picture

Hi Ken,

Thanks for reaching out to us here in Apple Support Communities! We understand you have some questions about sending email, and we'd like to help. To clarify, which image are you trying to hide? Is this a photo that you're including as an attachment, a photo being sent as part of a signature, or is this a photo of you that is being shown in the top right of the email that is the same as your contact card in Contacts on the Mac? These details will help us better determine our next steps.

Best regards!

It isn't sent with the message, as far as I remember.

Have you seen it actually sent along with the message?