The number of users for WhatsApp rivals major social media platforms and everyone's phone has a messaging app. And due to its straight-forward nature which if used properly can be used to spread awareness and promote anything, from Public Safety Announcements to new products/services.
SMS marketing can also help increase interaction with your other channels such as email, website and in-store visits. Using a shortened hyperlink is a great way to direct users to your website. A simple SMS reminder saying, "check your email for important updates", can also increase your email open rates. SMS is a great method for distributing coupons which can increase in-store visits and purchases.
You can promote anything with SMS/Whatsapp Marketing, new business locations, special discount offers, even your online services.