Thanks :). I’ve actually been looking for the RSVP stuff and I wasn’t sure which RFC to look through (wasn’t sure if it was in the CalDAV one or the iCalendar one… and they’re weirdly huge). I appreciate you pointing me in the right direction!
Also was curious how they were implementing reactions in e-mail. I actually think it’s a good feature, and it’s one that’s slowly been making it into XMPP and stuff. Emoji reactions and stuff sound kind of dumb and like a “whatever, who cares?” feature, but I find that on platforms like slack they’re actually a really good way to deal with quickly confirming something / finalizing decisions / quickly gauging the opinion of a group. I think a huge problem with e-mail and instant messaging is that they can be quite noisy, so having a “quiet” way to respond without having a thread explode is actually pretty welcome in my opinion.
You can now react to messages on Gmail | TechCrunch (techcrunch.com)