It could be delivered by mail, email, by hand, or even by pigeon.
It is sometimes short, sometimes lengthy, and with deep, profound, or simple feelings.
What is it?
When I'm lost, I hurt the most, as well as when not had at all. I’m often hard to express and easy to ignore. You can give me to just one person, or to many. What am I?
I have wings, but I'm no bird.
I have a bow and arrow, but I'm not Robin Hood.
I'm a Roman god, but I'm not Jupiter.
I look like a toddler, but I need no diaper.
My image expresses love, but I'm not a heart.
Who am I?