Is said whole, with nothing composed onto it and takes no だ／です, so there are no forms to conjugate.
お元気で
ogenkidetake care (on parting)expression
Example sentences2
では、お元気で。
dewa, ogenki de.
Well then, take care. neutral
皆さんもお元気で。
minasan mo ogenki de.
Take care, everyone. neutral