How does signing someone else's card work?

No. Click the link, add your message and name, and you are done. No email, no password, no account required. It works the same way for every Greetopia card.

You add a written message and your name. You can also add a photo, a GIF, or a YouTube video, and on premium cards a voice note.

Everything you add becomes part of the card and is visible to the other people signing it.

Yes. When you open the card you see the signatures that have already been added, alongside the template design. That gives you a feel for the tone others are taking and helps you decide what to write.

While you are still on the card, yes: open your message and you can change the text or add a photo. Because signing does not use an account, once you leave the card you cannot come back and edit that message, so get it the way you want before you close the page.

Once the card is delivered, every message is locked so the recipient card does not change under them.

Yes, while you are still on the card. You can delete your own message, and it does not affect anyone else or notify the person who created the card.

As with editing, this works while you are on the page. Signing does not create an account, so there is no way to return later and remove a message.

No. Signers appear on the card by name only. We do not collect your email when you sign, so nothing about you reaches the recipient beyond the name you type.

That is fine. Each card is separate. You can sign as many cards as you are invited to, and the same person can receive several cards from different senders and different groups.