[Sml] Re: I-D Action: draft-ietf-sml-structured-email-05.txt

[Arnt Gulbrandsen <[e-mail]>]

Robert Stepanek <rsto=[e-mail]> writes:
> On Tue, Oct 21, 2025, at 11:07 AM, Arnt Gulbrandsen wrote: 
> 
>  Being understandable by the users is an important part of 
>  user-friendliness. Users cannot be expected to care about the 
>  technical differences between e.g. structured data encoded 
>  using  JSON-LD and a calendar invitation encoded using 
>  vCalendar. 
> 
> Nit: I think you mean iCalendar (RFC 5545), not vCalendar? 

You tell me ;) Pick any.

I think the most appropriate format is the one for which the 
largest number of mail readers would display an "accept 
invitation" button, but any calendar format is appropriate, 
precisely because the format shouldn't matter to user.

The key is that users shouldn't have to care about the format in 
the message. There ought to be only two classes: Messages that 
cause buttons to be displayed and ones that don't. A message that 
contains "add ticket to wallet" has a different MIME structure 
from one that contains "add event to calendar", and WE all know 
about MIME structures, content types and JSON-LD. But users 
shouldn't (IMO) notice any difference in MUA behaviour due to that 
MIME structure difference.

Arnt