Re: [ietf-smtp] Quoted-Printable-8bit

On 29/03/2021 16:43, Sam Varshavchik wrote:
> So, what is the answer to the same question, for BINARYMIME?
It's sort of analogous, as I see it.

On 29/03/2021 16:43, Sam Varshavchik (also) wrote:
> The sender does not need to transcode 8bit to quoted-printable.
The sender does not need to encode binary as base64.

> But, again, you can't assume BINARYMIME availability and you still
> have to implement sending and receiving mail in RFC 2?822 format.
How can we assume 8-bit end-to-end?

I think the theoretical answer is the same, you can't.

I think the practical answer is that most email is transferred over
TCP these days which is a stream of 8-bit bytes. You sort of get
8-bits for free without doing anything special. You have to work at
*not* supporting 8BITMIME. So the bar for this feature was very low.

I will say even without announcing support for 8BITMIME, you still get
a bunch of 8-bit MIME messages from sources all over the Internet.
(The "postal" server does not announce 8BITMIME)

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