This is the 12346th most frequent Spanish word.
llegarles
"Llegarles" means "to reach them" or "to get to them."
In this usage, 'llegarles' relates to the arrival or delivery of physical items to someone.
¿Te llegaron los documentos que envié ayer?
Did you receive the documents I sent yesterday?
In this sentence, 'llegarles' is used to express the act of reaching or connecting with someone emotionally or intellectually.
Espero llegarles con mi mensaje de motivación.
I hope to reach them with my message of motivation.
Here, 'llegarles' (in its conjugated form) indicates the action of information being received by someone.