This statement allows you to add an arbitrary header to the message.
//PDFX,Email.Header,hdr,hdrvalue
For example:
//PDFX,Email.Header,Disposition-Notification-To,jack@microsabio.com
The example given is a particularly useful one, requesting a return receipt from the recipient when she reads the message. Definitions of standard headers can be found on the Internet, but keep in mind that it is up to the particular SMTP server and/or email client to properly interpret them.
Also note that contrary the standard //PDFX,Email.xxx,value directive, this one effectively takes two arguments - the header name and its value. You can, however, enclose the last two arguments in quotes if you prefer to maintain the single argument syntax.
Compatibility
PDFXv3, v5, v9, but supported only for Email.Method (or Email.Type) values 4-6.
Requires A-Shell build 1124 or higher.
