What % of invitation list editors joined the event (event registration only)?

Is this an accurate measure for effectiveness since not everyone on the list may be invited? But it may be difficult to measure the percentage of invited editors who register since we are not tracking what editors out of all the editors on the list were sent invitations. Perhaps we can track if an editor in the invitation list received a talk page message from the organizer (but i guess it wouldn't be enough)
@ifried @Iflorez

@gonyeahialam We marked this under "Tool usage" rather than "Effectiveness" because we do not think it is an accurate measure of effectiveness. Note that we do not have a category for "Effectiveness" in the measurement plan right now. We can probably only begin measuring effectiveness when we know who the organizer invited -- and this will only come when we implement support for messaging, which is a post-MVP feature. In the meantime, I don't think it would be worth the effort to try to analyze talk page messages, especially since many organizers may choose to invite editors via wikimail.

So, with that being said, do you think this metric is useful for helping measure tool usage with the data we will have available for the MVP, or no?

@cmelo Hello! We discussed in a team meeting that we should already be able to track tool usage data when the MVP is released, but I wanted to confirm in this ticket. Thanks in advance!