to let you know, to notify you
Y un momento antes de cerrar los ojos, dijo a tu madre que no debía avisarte.
And just before closing his eyes, he told your mother that she shouldn’t tell you.
— Cinema Paradiso (1988)
Quiero avisarte que voy a casa para su cumpleaños.
I want to let you know that I'm coming home for his birthday.
— Un día de furia (1993)