Specify E-Mail Subject Header
This command specifies the subject header for this e-mail item. An e-mail subject is required if no body text or attachments have been specified.
The parameter on this command is used as follows:
|subject||The subject line, normally enclosed in double-quotes (which will not be included in the header line. Words in the text which contain characters not in the ASCII character set will be encoded as described in RFC2047.|
The default macro-expansion character on all $email... commands is an ASCII grave accent character (`).
Default: no subject line will be used
$email_subject "Special Offer!"
$email_subject "Steve, 您好"