glenn@heaven.woodside.ca.us (Glenn Reid) (01/02/91)
I was poking around with Mail.app today trying to figure out how it encoded the request for a Read Receipt (2.0 feature in which you get notified when someone reads the mail you sent to them), and wondering if it also would generate a receipt on a non-NeXT system (it does not). Here's what I found out, just in case you're curious or interested. There's one line in the mail header that is slightly different if you request a Read Receipt, and the receiving Mail.app must look for it and generate the receipt if it sees the flag: Header line without a request for a read receipt: Received: by NeXT Mailer (1.62) Header line with a request for a read receipt: Received: by NeXT Mailer (1.62.RR) [note the ".RR" indicating Read Receipt] Unfortunately, Mail.app doesn't also include the standard delivery receipt header line that would cause it to work with other UNIX mailers as well. I think the standard header is something like Receipt-To: glenn if I recall correctly. Just thought somebody else might benefit from this. /Glenn -- Glenn Reid RightBrain Software glenn@heaven.woodside.ca.us PostScript/NeXT developers ..{adobe,next}!heaven!glenn 415-851-1785