Yes, you can prefix a quoted string to the actual address. No, the quoted string is not part of the address.
There are two approaches here: one is to defend the spammer's abuse of the standard (intended to trick the average Joe into believing they have received mail from someone else), and the other is to read the standard On Tue, Oct 18, 2016 at 4:02 AM, Dianne Skoll <'d...@roaringpenguin.com'> wrote: On Mon, 17 Oct 2016 19:11:29 -0400 Ruga <r...@protonmail.com> wrote: > rfc 822 (the actual standard): Which as I mentioned is obsolete, but I'll play with you... > authentic = "From" ":" mailbox ; Single author / ... > mailbox = addr-spec ; simple address / phrase route-addr > addr-spec = local-part "@" domain And you left out the BNF of "phrase", didn't you? Tsk tsk! You can't pick and choose pieces of RFCs, you know. They come as a package deal. TL;DR, the header: From: "Dianne Skoll <d...@roaringpenguin.com>" <some...@spammer.org> is absolutely compliant with RFC-822 and its successors, RFC-2822 and RFC-5322. Regards, Dianne.