Windows 10: Mail keeps adding spurious PNG attachments

When I reply to an email, Mail keeps adding spurious PNG files to my messages. They definitely aren't there when I hit "send" or when they're in my outbox, but they are attached to the mail before the recipient gets it. Sometimes I see them in my "Sent" file, but not always; usually the recipient cannot open them and often I cannot do so either, but when I can open them they seem to show a graphic related to the business of the original sender of the mail that I am replying to (it doesn't happen if I start a new mail instead of replying to one)

Can anybody explain to me what is going on?

:)

 

Mail keeps adding spurious images after I send

Thank you for the response.

The Troubleshooter found no issues.

I had previously deleted the accounts and reinstated them, it made no difference.

I don't believe I get this effect wghen I use my mail from the browser, or from an Android device. However I cannot be certain as I have been unable to make even the Mail app do it again since posting this. Perhaps it is some form of interaction between
Mail and Yahoo. I will have to wait and see if it does it again.

 

Mail keeps adding spurious images after I send

When I reply to an email, if it contained a link to a website (such as a company website that is referenced in the signature) Windows Mail seems to look on that site and selects a random jpg or img file from that page if it finds one, or selects an area
of text on the page and makes a png image from it. It then attaches that image to the outgoing mail secretly; it doesn't show in the Outbox, nor even in the Sent Mail folder unless I deliberately refresh it later. It's rather like the way Facebook attaches
an image if you include a link in one of your postings.



The annoying thing is that the image may bear no relationship to the topic of the email, or the file my be unreadable by the recipient (especiaslly if its a png file) or it may be rejected by their firewall because it contains an image.

What is going on? Why does it do this and can I turn off this "undocumented feature"?

 

When I see problems with sending or replying or forwarding I add one of my other E-Mail accounts such as Hotmail or Gmail in the BCC block, see if I get what is actually being sent and probably what the other recipient/s get.

 

I've seen some of them in my "sent" box, after the recipients contacted me to say they couldn't open the attachments. The question is, why are they there?

 

I'm still puzzled about this. After studying the problem, it seems as if when I reply to an email which contained a link to a website (such as a company website that is referenced in their signature) the email client looks on that site and selects a random jpg or img file from that page if it finds one, or selects an area of the page and makes a png image from it. It then attaches that image to the outgoing mail secretly; it doesn't show in the Outbox, nor even in the Sent Mail folder unless you deliberately refresh it. It's rather like the way Facebook attaches an image if you include a link in one of your postings.

The annoying thing is that the image may bear no relationship to the topic of the email, or the file my be unreadable by the recipient (especiaslly if its a png file) or it may be rejected by their firewall because it contains an image.