Re: [ietf-822] A "Reaction" strawman to throw into the mix

[Dave Crocker <[e-mail]>]

On 10/29/2020 10:49 PM, Pete Resnick wrote:
> it reuses existing pieces of infrastructure that seem to fit this use,

Except that, really, this use is semantically quite different from the 
intended use of MDN (RFC 8098):

>    "...used by a Mail User
>    Agent (MUA) or electronic mail gateway to report the disposition of a
>    message after it has been successfully delivered to a recipient."



The goal of indicating a recipient's reaction is quite different from 
indicating disposition of a message.  The term "laying violation" comes 
to mind, in spite of this not quite being a matter of layers.


In structural terms, the MDN is also a more constrained environment than 
a general email message.  Hence, using it for reactions limits the 
context for including reactions.


Adding the ability to have a reply message include content tagged as a 
reaction adds to the semantics of email exchange.

Having a message designed for signaling information, about message 
handling, be modified to include end-user reactions distorts its 
original purpose and limits the added function.

d/

-- 
Dave Crocker
Brandenburg InternetWorking
bbiw.net