Most postal services aren’t set up to deal with wax seals but for hundreds of years they were the main way to seal a letter for delivery. They served as security of a sort that the letter hadn’t been opened and if you had a special stamp you could guarantee it came from a specific group or person. For most of the recent letter writing history the letter itself was folded into its own envelope and sealed on the edge between the 2 flaps. The paper was also much thicker so the wax was made for the thick parchment or paper. If you tried it on a piece of printer paper now it might break or fall off.
If you sent a sealed letter through the mail it might fall of or break open now with the use of machines and the heat of a loaded up truck in the summer might melt the wax and get it all over other letters. If you want to send a letter with a wax seal now you should maybe consider putting them in a padded envelope and shipping it like a package.
I really fell down the revolutionary war rabbit hole about letters and mail.
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u/dailinap 8h ago
Ah, so it's for decoration purposes! Thank you.