Comment on Attachment Tamer

I have used Mail Attachments Iconizer (now renamed Attachment Tamer) for several years with NO problems. It is makes it possible for your non-Mac contacts to receive in-line images in the body of the email (instead of icons or attachment headings) and you can set the parameters for the size and other attributes of attachments that you wish to send as in-line images or as regular attahments. You can also set similar parameters for mail you receive.

If you have a logo in your signature, this app can ensure that it will be visible in place.