There are several ways to say Best regrds in Spanish. Below are some of them:Saludos cordialesSaludosAtentamente
You can translate the words, but the meaning would be lost in translation. The closest thing to "Warm regards" written at the end of a letter or note would be Saludos cordiales (cordial salutations/greetings)
Kindest Regards
Estamos abiertos would be the best way to say "We are open" in Spanish.
Soy inteligente would be the best way to say "I am intelligent" in Spanish.
Best wishes? Kind regards? Warm regards? They're endings I would use. To say "goodbye", I would just write "goodbye" and wish them well in everything they do.
best regards
Soy de España would be the best way to say "I am from Spain" in Spanish.
Yo tenía razón would be the best way to say "I was right" in Spanish.
con un cordial saludo
Melhores cumprimentos, lembranças "My best regards" - Meus melhores cumprimentos
You could say "terveisin", if by regards you mean what you would say at the end of a letter.