Who else was like me and obsessed over their invitations? I love pretty paper and enjoyed customizing my invitations with the seller, Pretty Lil Notes I found on Etsy who designed them based on my requests and feedback. She even created my own plaid for me for the backs of the invitations, envelope liners, and other "day of" paper that I used at my wedding.
Then I used custom postage from Zazzle to coordinate with the invitation suite - trees for the invitations and wreaths for the RSVP envelopes.
What details are included in your invitation suite? Are you making them yourself, using a website or a local printer?