you have made a few clicks of the mouse and created superbly designed invitations, all personalized with your expected guests' names - then they all get sent out to everyone's address with another single click all at once.
Then and there, once they get their invitations, they can visit your personalized wedding list website's page to click in their RSVP, which would then be tracked and kept in constant update as guests respond.
From there, they can also see the reception's dinner menu and make their selections accordingly with a few clicks.
Again, all will be tracked and kept up to date.
Wedding list websites can also keep track of seating arrangements, as this can be another thing that may have a few changes as time marches on towards that most special of dates.
All that is tracked can be viewed with a click and a glance, and if needs be, may also be printed out on paper for your convenience.
There are many aspects of wedding preparatory tasks which wedding list websites can handle for you.
All it takes is a few clicks of a mouse, and you can then work on other things.