You can send your own card from Paperless Post.
I love this site, there are hundreds of creative cards, envelopes & envelope liners to choose from, it is very reminiscent of some of the fine stationary you can find at Mrs. John L. Strong et al.,
CAVEAT: The site is a bit wonky when it asks you to log in & then tells you that you are logged in already. It can be very frustrating (I know!) Just start a search and you'll be good to go.
I have not been compensated in any way for this post.