I like that it's very user-friendly to build invites, send them out, and receive accurate and timely feedback.

The designs are nice and simply, gives me less creative work to do

What I love is that is easy to use. They have a lot of free samples and you can choose from a big variety of different styles, so you can impress anyone with your card. Also you can have a guest list so you can track who received and opened the card.