What are those J and L characters in email?
Do you receive email with a mystery "J" or "L" in them?
Fabulous! Thanks very much Mike J
What the heck are they? It's actually not much of a mystery: they are
automatic emoticons inserted by MS-Outlook when someone types
Outlook substitutes the string for the letter J or L, and formats that character with Windings, which in that font maps to the smiley or the frowny glyph.
I guess if you look at J and L sideways, and pretend only half their mouth is working, it kinda makes sense for a J to be a smile and an L to be a frown...?
Well, anyway, now you know.