With messengers under restrictions, SMS is the one channel that works for everyone without exception: no internet, no app, no VPN required. A boring channel — and reliable for exactly that reason.
Clients miss booked appointments and the messenger reminder never arrives.
Several thousand contacts have been silent for over a year and nobody works them.
You need an order status to reach the client with certainty.
Part of your audience are older people who simply do not use messengers.
A new location opened and you need to reach people living and working nearby.
The base left WhatsApp and there is nothing else to contact it with.
SMS costs more per message than a messenger, so it is used precisely — where guaranteed delivery matters more than volume.
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