Notice of notification

Hello, is there a way to send a notification notice? I explain. I have seen ways to send a message to WhatsApp, but they always move you to said application. Is there a way to directly send a message without switching to the WhatsApp application? Email also works for me, it's important. Please help and thank you very much.

I think it's paid, isn't there some way to make it free?

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Taifun

thanks!