The way to do this would be to use a spreadsheet such as Google Sheets or AirTable to save the contact details of the person who has registered.
I will see what I can do to make this work with users who submit the form with existing accounts. However, I am already working on a few updates this weekend and can’t promise this feature to work yet.
This is a separate feature (email notifications) from the forms, which should remain simple in their functionality.
Currently I see no other way than to send an email manually with the link, or things will get complicated very fast with setting up forms (triggering an automated email, making sure it works and is valid across all clients, making sure there is a valid zoom link, providing an unsubscribe option, ensuring it is sent from a reliable email service with high deliverability rates). TLDR - email is complex, and unless we set aside the time and budget to make it work properly I’m averse to building it, unless it’s really something everyone needs!
(taking in consideration that we also need to address those who comment to the event threads directly not just through the form).
This is going to be very tricky again… It’s not part of the forms functionality - it would mean reading the topic and scraping the users who responded, and getting their email addresses through Discourse.
@matthias is there an easy way to get email lists in Discourse from people who have commented on a topic, without manually consulting each user one by one?