(That title is rather garbled but I don't know a better way to describe it)
I email with someone who uses a PC – I don't know what OS version or email program he uses. I'm using OSX 10.11.6. Recently I've sent a few images in a couple of emails using Apple Mail. When my friend replies he includes the whole message including any attached images (not my preferred email etiquette but whatever).
The issue is that some of the images in his reply are different than the ones I've sent! In one email I included two images and in his reply one image was right and the other was wrong. In all cases the "wrong" image is the one below of... a danger marker?
At first I wondered if the correct images were getting through but they seem to be (or at least he hasn't said "why the heck are you sending me a danger marker..."?
Is this a case of his email program being stupid about attachments?