@All:
Here is the definitive test of the question of «attachment» vs. «embedded» in emails from Apple’s Mail App:
- Creat an email, in Apple’s Mail app, that you believe shows «embedded» files/images/photos/pictures/whatever.
- Send that email to an account where you can open that email in an email client that allows you to View the Raw Source of that email.
- Copy that Raw Source, and paste it into the More Text portion of a comment, here.
Of course, you should eliminate any personal information in that Raw Source, before sending it to us.
By the way, in order to keep the Raw Source from being too terribly long, it will help to use smaller image files. Maybe just 10x10 pixels, perhaps. However, that is only a suggestion to help in deciphering the Raw Source.
Apple’s Mail app on Mac has the ability to View the Raw Source. (It doesn’t include any of the transport Headers, such as From, To, and many other transport fields. So, unless you have personal information in your files/images/photos/pictures/whatever, or the text within your email, there shouldn’t be any personal information to be eliminated.)
Back when I was in the Corporate and Governmental sectors, the Pro version of Outlook we used had a very similar capability. Please let us know if that is still available in your version.
Along with the Raw Source, please let us know if you have found any «embedded» versions of your files/images/photos/pictures/whatever, within the Raw Source, and, if so, where you found it.
You should, instead, find only cases of your files/images/photos/pictures/whatever as «attachments», as per the Official Internet Protocol Standards.
If you have trouble making “heads or tails” of the Raw Source (which is nothing but text, with even your files/images/photos/pictures/whatever given in a textual form, though it will read as “gibberish”), we, your fellow users, here, can help y’all understand what is there.
One could perform multiple variations on this test, such as performing the various “workarounds” people have posted, within this Discussion, to see how that changes the Raw Source of the received email.
This will give us all far better information on what is actually going on.
I do hope this suggestion will help get past the purely superficial appearances, and the “he said, she said” arguments, by getting down to what the actual emails contain.