By the way, did you leave your wet umbrella by the door?Stop in to say hello the next time you pass by.The Post Office is by the library, they're both on your left.By the way, you're a poor speller.
"Me" is an object pronoun. Object pronouns are placed after a preposition or a verb. Examples: Look at me. Can you help me? You should listen to me. The doctor advised me to give up smoking.