I've been getting button quail eggs from my SIL in SC. The last box I got had a big hole in it and a sticker that said "received damaged". The mailman asked how the eggs turned out and we told him it wasn't a good hatch. He explained that when the mail comes in, they THROW the boxes into regional bins (east side, west side, etc.) Doesn't matter if it's marked fragile or not. They try to toss the bigger boxes first but that doesn't always happen. He said if you pay a little extra and send the box certified, they walk the box to the bin. Now, that doesn't mean they won't throw a heavy box on top of it, but he said it lessens the chances of damage because they are more careful with certified. I haven't tried it yet because on a $5 something priority box of eggs, it would have cost me almost $3 more. The bubble wrapping of each egg definitely helped and nothing was broken. I just hope they weren't scrambled...