The documentation specifies how to add inline attachement, but what is the correct way of referencing it from the html part? Is it possible to include images automatically as it is in other libraries?
Maybe someone has written a little snippet and is willing to share?
That's not exactly a trivial thing, lucky for you someone has subclassed Zend_Mail (Demo_Zend_Mail_InlineImages
) to do that, see here:
http://davidnussio.wordpress.com/2008/09/21/inline-images-into-html-email-with-zend-framework/