One of the NPCs in Celadon Mansion.
I think eeve is a trade only Pokemon from leafgreen/firered or from Pokemon colusseum.
It is given to you in Celadon Mansion.
Evee can't be found on emerald so get one in firered or leafgreen then trade it to emerald.
I don't know,but it might be the same question as "where to find a eeve in Pokemon diamod
You can go to bebe and talk to her and she will give you an eeve.(Notebebe is in Hearthom city she will give you an eeve only if you have the national pokedex.
Evee is not availiable in Pokemon Sapphire.
at the end of the game
You can't.
to an normal eeve
someone gives you one eventually.
Nope, you have to catch them yourself.
one of professor oaks aides gives it to you