Blog
Notes on USSD, WhatsApp, promotional mechanics, and the regulatory bits that catch out the brands learning South African mobile marketing for the first time. New posts roughly monthly.
Behind-the-scenes notes on the architecture, surge planning and language coverage from the Vaultbook WhatsApp activation work for the TotalEnergies Africa Cup of Nations 2025 in Morocco.
By Sarah-Leigh Brown
Practical working ranges for USSD, WhatsApp and SMS campaign metrics in the SA market. Use these as a starting point for forecasting, not as gospel.
By Sarah-Leigh Brown
A side-by-side comparison of the two dominant mobile marketing channels in South Africa, built around the question every brand team asks before signing a brief.
By Sarah-Leigh Brown
USSD is the dial-a-code service that runs every airtime top-up and banking shortcut in South Africa. Here is how it works and why it still belongs in your mobile campaign mix.
By Sarah-Leigh Brown