Glad you liked it! It's interesting to know people in this community are appreciating the post I am posting here.

Yes, I have tried several of these tools so I can comment on few good one's that I can weed from the rest.

Let me know if you need any help/suggestion. Right now, WhatsApp is getting really hot in several market as a mobile app. And leveraging it to marketing product in any category of business is highly responsive vs other tools like Facebook, Google Ads, etc.