Guaranteed Delivery. I guarantee that you will receive the stamps I ship. If your stamps have not arrived 6 weeks after the ship date, I will send a full refund. Please be patient until the 6 weeks is up. USPS is usually prompt, but sometimes snailmail can be mysteriously delayed.
How often are shipments lost in the mail? Not very often. But it’s always painful when it does happen. I’ve shipped many thousands, probably many tens of thousands, of packages of stamps all over the USA and all over the world in the past 25 years. The mail system is generally very reliable. Way over 99% of the mail gets through with no problem at all.
Sometimes, though, there are inexplicable delays. Occasionally it takes 3 weeks or more for a simple first
class letter to arrive. Maybe 1 in 1000 for mail to USA addresses. But delays are much more common in
international mail, especially since September 11 and increased airport security. Many of my airmail letters
overseas arrive in just a few days. But probably 5% take 2 weeks or more, especially to addresses other than
West Europe or Australia. If your shipment hasn’t arrived 2 weeks after my feedback email, please let me know and we can troubleshoot. But sometimes we just need to wait patiently. We normally ought to wait 30 days before we really worry. In any event, the post office won’t accept a lost mail report until after 30 days, and I won’t concede defeat until 6 weeks from shipping.
Alas, sometimes the mail doesn’t get through at all. It just disappears. How often? Less than 1/10th of 1%
when the address is USA, Canada, Northern Europe, Australia, New Zealand. Probably closer to 1% for addresses
in many nations of Latin America, Eastern & Southern Europe, Asia, Africa or the Mideast.