mail_set_in_reply_to()
Usage
mail_set_in_reply_to(messageId)
Description
Indicates that the mail is a reply to the message with the given messageId
. This function automatically sets the In-Reply-To
header of the mail so that the receiving mail client can handle it correctly.
This function is especially interesting in conjunction with the mail_save_outgoing_message()
function.
Example
${mail_set_in_reply_to('<1910177794.5.1555059600315.JavaMail.username@machine.local>')}