Handling calendar invitations and responses using email

[yanosz]

Refs:

• https://help.nextcloud.com/t/handling-calendar-invitations-using-email/5168
• Handling calendar invitations and responses using email calendar#186

From what I got, I can add participants to an event and they are invited by mail.
But: When I respond using the MUA, the response is sent to the authors private mailbox. Nextcloud doesn't get the status.

That's bad, since I need nextcloud to reflect the participant status of an event, even if no MUA updating the event using CalDav is present. This should happen without further processing at the site sending the invitation (Eg. logging in into nextcloud or acknowledging the response in nextcloud): In case of shared calendars, the participants status should be updated at once.

[yanosz]

Thinking about an implemenation, I've no idea on how clients handle https / http addresses in CAL-ADDRESS value types for deeplinks (aka jumping into nextcloud).

Refering to RFC 2445 any uri is allowed... http://www.kanzaki.com/docs/ical/calAddress.html .. but most clients may focus on mail.

If a deeplink doesn't work, nextcloud may need to subscribe to imap. Although imap is a very interesting sharing / groupware protocol - imho it's out of scope to have a general imap-backend.

Another idea is to have a mail server piping incoming emails to an adapter-script, posting the email's content .. but this may be nasty from an operations point of view.

[MorrisJobke]

Duplicate of #2338

[mchobbel]

It's good to see the buttons in the email-body are working nicely. Still, from a usability perspective, it is a big wish to see the email-route working as well.

The problem is

1. Most email-clients will present multiple sets of (Accept / Maybe / No) buttons. Some buttons work, others don't.
2. Users are presented with various invitation emails from various origins (outlook, google, etc), and at this point the user must be very careful of which buttons to use for each particular origin.

Are there any plans to do such server based processing of incoming emails?

[colans]

@mchobbel I believe that's #19144. Please hit the 👍 button over there to show your support.