creation of N8N schema for whatsapp mass mailing.

rCreation of N8N schema for whatsapp mass mailing. I need the creation of an N8N schema that will send mass message through whatsapp using API. The message is composed of the last 30 items of the RSS feed plus a time dependent message ( good evening good afternoon good morning ) plus the recipient's name The sending data will be fed from a Google sheats table, where it will have the first name and whatsapp number. The scheme needs to check if it has already been sent if not send the message and update that it has been sent . And after completing the cycle it needs to mark that all rows are waiting to be sent The schema needs to check if the number is valid whatsapp if not update in Google sheats. Checking that the number is not valid Sending to whatsapp will use uzapi which has the documentation https://uzapi.com.br The scheme needs to support sending to up to 10-20 different numbers (to speed up delivery) The scheme needs to be act