On Tue, Nov 19 2013, Adam Sjøgren wrote:

>> If we let the user specify a list of mailing lists he's subscribed to
>> (or suck this info directly from gnus groups), we could add it to
>> gnus-icalendar-identities and any RSVP sent to your mailing list will
>> produce answer buttons for you.

>> Is it OK?

> I see your point.

> In my use-case it is far from ideal - the company has many wide
> mailinglists that I am on without knowing it (everybody in a logical
> part of the company, everybody in a building, everybody in a country,
> etc. etc.).

> But I can add them as I go along, so it should be workable.

Does this work for you?