Automatically, but in a way that, for some reason (typically because it is too complicated, or too ugly, or perhaps even too trivial), the speaker doesn't feel like explaining to you.

This term is quite old, going back at least to the mid-70s in jargon and probably much earlier. The word `automagic' occurred in advertising (for a shirt-ironing gadget) as far back as the late 1940s.

adv. Something that happens automatically, but that also has some mysterious, "magical" element to it. "Smart" appliances, features, etc. that do intelligent things with less help than you might expect.

a process that happens automatically but cannot be explained to the processee how it actually happened.

Used to explain the unexplainable behavior of something. Usually refers to computers.

When an action automatically happens and you are amazed how it happened.

a. The action of causing processes to occur in the background without end users being aware of what is happening.

b. Making things work without requiring user intervention.

c. Fixing something without anyone seeing how it was done.

to perceive something has happening all on its own, as if by magic; a way to describe something that is both automatic and magical