I have purposely sent packages without putting my board name in or on the package.
Not sending a PM is not the end of the world.
One option is to do what was suggested - post "Got a Squishy Today from an Angel- Thanks a Million!" OR, (I'm getting old-fashioned)
do what your mother instructed anyway. Get out a pen and piece of paper.
More than once, I got a Handwritten thank-you card based solely on the information on the outside of the package. Ms. [Last Name], address, etc.
I can't tell you how thrilled I was! :thumbup: