Note: Mail Attachments Iconizer has been upgraded to Attachment Tamer. If you have a license for Iconizer, you can download Attachment Tamer as a free update.

Since version 2.1.9 Iconizer allows you to compose signatures with images in a similar way as if you were composing a message, except that images are initially displayed in place when you insert them (which is usually the desired behavior). You can also switch them to icons using the contextual menu. Settings for each image are remembered and also apply when you use the signature in a message.

Note for Mac OS X 10.5 users: If the image you have just inserted in a signature is displayed as an icon, switch to another signature and back.

To get the best results across different email software with an image displayed in place use a small GIF, JPEG or PNG image file. Prepare it in your favorite image editor, save it and then drag the file the signature in Mail. Avoid copying and pasting directly from an image editor, images larger than a few kilobytes, and advanced formats such as PDF. To ensure that the image is displayed directly in the message to the recipient, make it part of an HTML layout by using rich text formatting

Alternatively you can attach an image or any other file to your signature and have it displayed as an icon. In that case you can use either rich or plain text, but it is best to put the attachment at the very end of signature for maximum compatibility.

Known problems: There are two known problems not related to Iconizer: (1) the “Missing Plug-in” or the blue brick problem, (2) the fact that Mail forces attachments (and images) to be on a separate line, which makes elaborate layouts impossible.

Workaround: (1) It seems that you can safely ignore that the text “Missing Plug-in” (or a blue brick) is sometimes displayed instead of your attachment: the attachment is there nevertheless. (2) If you need an elaborate layout, consider either using a stationery (which allows any HTML layout), or using remote images (such that reside on a web server) instead of attached images (such that are sent within the message): SignatureProfiler, a free Mail plug-in, allows you to do that.