Hello everyone! I posted not too long ago about using Catprint to print my DIY wedding invitations. I originally ordered my invitations using their "Ultra Cardstock" (130 lb), but when I got my free hard copy proof the paper felt a bit flimsy and unglamorous. My fiancee wants to upgrade to their double thick cardstock (200 lb), but I fear that this will make our invitation too rigid and "non-machinable" at the post office, which will in turn increase our postage costs. I had intentionally scaled back on our invitations to save money (it's just one double-sided 5x7 card and we're asking guests to RSVP on our wedding website), so I really don't want to have to pay back the difference in postage. Has anyone else here used a double thick cardstock for their invitations? Did you end up having to pay more for postage because of the thickness of the card?