provider email maintenance standard

[Andrew Dampf <adampf () gmail com>]

Hello nanog,

I've heard second-hand there is an existing standard for provider
maintenance emails that should be followed in the form of a calendar
attachment, but I can't seem to find any information on it. Can anyone help
me with the following:

1. Does this standard exist? If so, is there somewhere I can read more
about it?
2. How many providers follow this standard?

Thanks!