Can Make send an SMS message to the customers phone immediately when they tap on a facebook ad?
How do you imagine this scenario?
To send an SMS, you need to know the phone number and get formal consent to receive the newsletter. That is, the user must at least start interaction in WhatsApp and Messenger chatbot, leave their phone number and click on the consent to receive the newsletter. This is at least two clicks (the phone number may be pulled from the Facebook database and offered to the user to add to the newsletter database in one click - but this is not always the case).
There may be tricky ways to bypass these requirements, but I am not sure that they comply with EU laws.