Can people I did not invite reply through a forwarded link?
Anyone holding the link can open the page, so for a closed guest list put a password on it and send that to the invited names. The link alone then gets you to a locked door, not to the reply button.
Does the link change if I edit the page?
No. The address is fixed to the event and the content behind it moves. Reply to Jitabi with a change and the same link serves the current version to everyone who opens it next.
Will forwards show me who shared the invitation?
Not a chain of readers โ the list records replies, not openings. What you can see is every answer that arrived, including guests who found the link through someone else; decide separately whether to let the page be password-only.
Can I print the link on paper?
Yes. The address carries a QR version for cards and posters, so the neighbour who never asks still comes through the same door as everyone in the group chat.
Do I need a new link for a new event?
Each published event has its own address, which is exactly what stops two parties' replies merging into one confused list. Build the next page, take the next link.
What does sharing the link cost my guests?
Nothing to install and nothing to sign up for mid-scroll: they open the page in the browser their WhatsApp uses and reply there. That low friction is why reply counts beat group-chat tallies.