The reason I wanted to be so thoughtful here is to show the legitimacy of free software and free/open standards to my extended colleagues who don't always think about such things.
In those circles, the email signatures tend to be loaded with proprietary social networks and messenger apps.
The other stuff is pretty obvious or has written standards, but with its decentralized nature, I want to get this one right. 😉
@downey one of the problems with specifying it as "ActivityPub" is that AFAIK ActivityPub does not specify the @email@example.com notation. It relies on actor URLs internally. The @firstname.lastname@example.org format IIRC uses WebFinger protocol, which is used on top of ActivityPub by a large part of fediverse software for convenience.
@downey It's kind of like you were saying "the IP is mumble.example.com". It's obviously a domain name, and while you can obtain the IP address using it, and putting it in the "Address" field in a mumble client will likely work equally well as putting an IP adress would, it's technically wrong.
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