A wild attachment appeared!
In issue 283 of MacFormat there was a letter about problems sending images as attachments in Mail. Up to and including Mavericks, I used Attachment Tamer which worked brilliantly to send images. However it has not been updated for Yosemite. Do you know of anything equivalent rather than going into Terminal? Francesca Shearcroft I’m unsure exactly how Terminal would help you in any case. For emailing images, Attachment Tamer seems mainly to be a way of forcing images to attach as icons, rather than being embedded directly in the HTML of the email itself. You can force this behaviour yourself by compressing the images first. Just select any number of images in Finder, right-click one of them and then choose Compress. This will create an archive of those images, and if you drag that into your email it will attach as a file, not an inline image. Unpacking at the other end is just a case of double-clicking the attachment.
If you’ve already been annoyed enough by the default behaviour of Mail to install Attachment Tamer, it’s unlikely that this manual workaround will be satisfactory for you. I suggest you try the Anti Inline Plugin at http://bit.ly/mf_antiinline. Its author isn’t a registered Apple developer, so OS X will show a warning when you first try to open it. You can bypass this by right-clicking the installer and choosing Open, and click Open in the dialog that appears.
The other catch is that this will initially appear not to work because Mail tries to be extra clever and even when it receives images and PDFs as attachments, it will still try to display them inline whenever it can. The plug-in isn’t designed to prevent this. What it does is format your emails so that images are sent as attachments. When a recipient opens your message, they should see the images as icons, not inline images.