IMG files as attachments

I’m having a small problem with images – on some email clients they are not displaying in the email content at all. Email theme files and post content images are equally affected.

What I understand the cause of this is that they are being pulled from the server and are not attached to the email itself – is there a work-around for this?

Thanks.

http://ww.wp.xz.cn/extend/plugins/alo-easymail/