I ordered 100 jumbo postcards
I ordered 100 jumbo postcards to write and send by hand to my favorite clients. They look fine, but are thin. They remind me much more of a 4x8 photo card folks send at Christmas than the heavy cardstock I've received from an alternate company. I tested one myself by sending it to myself via a random mailbox. It arrived mostly in tact, with just the edges crinkled.
Even with the quality, the price can't be beat. Next time I'll order a smaller card with envelopes.