[JonStout]

Just wanted to confirm and update this for 4.1.9.

now the PHP file is under include/func/func.mail.php

I commented this line:

list($mail_message, $files) = func_attach_images($mail_message);

And then, in the email template files, I replaced

{$ImagesDir}

with

{$http_location}/skin1/images/

(be careful of the trailing slash -- you may get doubles "//"

I haven't had any secure pages, but it seems to have worked fine for all regular non-secure emails.