Similar to keypal or penpal. A good, reliable friendship with a male or female through e-mail contact only, and most likely someone you'll never meet in person. Also similar to textie-friendie but done with e-mail.
Female: Look, I found a funny redneck quiz online! I scored a 41%! Lol
To her friend: This is so silly I have to let my inbox buddy know so we can compare answers.

Friend: send it to me too so I can take the quiz!
To her friend: I don't need to. I already know your answer, 100%! Lmao
by twisted english August 24, 2014
Get the inbox buddy mug.