No, guests never need to create a Greenvelope account to RSVP. When a guest gets your invitation by email or SMS, they tap the personalized link in their message and land directly on the invitation. From there they can view the animated envelope, see all the event details, and submit their RSVP in just a few taps, with no signup, password, or app install required. The lower the friction for guests, the higher your response rate, which is why this is the default experience for every Greenvelope event.