WhatsApp is where people already are, which makes it tempting to use as a promotion channel. The risk is just as large: it is also the most personal app there is, and an unrequested message there annoys far more than anywhere else.
Start with WhatsApp Business
It is free and it separates work from personal life. Fill in the whole profile: description, hours, address and, above all, the website. That field is one of the few places where your address stays visible all the time.
Catalogue
The catalogue turns the conversation into a shop window. Good photo, clear name and price, where it makes sense. Each item can be sent as a message, which shortens the back-and-forth considerably.
Direct chat link
A link in the format wa.me/YOURNUMBER opens the conversation without the person having to save your contact. Put it on the site, in your social bios and in the footer of your emails. It is the smallest possible friction between interest and conversation.
Status, sparingly
Status is seen by people who already have your contact and intrudes on nobody. It works well for finished work, behind the scenes and announcements. Posting too much tires people out just the same.
Broadcast lists: careful
Only for people who asked. Mass messages to contacts who did not opt in lead to blocks, and blocks in volume take the number down. Losing a business number is hard to undo.
What WhatsApp does not do
It talks to people who already found you. It does not bring new people. To be found by someone who does not know your business yet, the route is search — and that is where publishing your listing across a network of search sites comes in, which is what Magneth does.