The only complaint I have with tthe SPOT Gen 3 is the yearly cost. I have never had a message not go out.
I have used it on the CDT way down at the Mexican border, up the very deep Gila River canyon, and many
places in the Wind River Range in Wyoming and Yellowstone and Colorado. You just have to wait until the little "email message"
light stops flashing. That may take up to 15 minutes. Don't know why it should take so long for that small
amount of data but it does. If you turn the device off before the message light stops flashing then it didn't go out.
Simple as that. They should emphasize that fact more in the instructions.

Larry