Gmail - google sheets - WhatsApp API

We need a google script that extracts information from the content of different emails (maybe using regular expression with regexr?) and orders this data in the same google sheets file. We also need an automation that triggers automatic WhatsApp messages to the contacts of that google sheets, with different templates depending on the content of each cellar. We also need the instructions to arrange that script by ourselves to fit it to the format of the emails of new providers. We’ve already have written a bit of code that maybe it can be used to cheapen the cost.