Pakistani banks are collectively losing money on SMS alerts. The Pakistan Banks Association told a Senate Finance Committee hearing in April that banks pay telecom operators roughly Rs 25.6 billion a year to deliver transaction alerts, while recovering only about Rs 18.7 billion from customers, a gap of nearly Rs 7 billion annually. A better telecom contract won't close that gap. The way most banks currently send customer messages needs a structural second look.

The instinct is to treat this as a channel-swap exercise: replace expensive SMS with a cheaper alternative and move on. That undersells the opportunity. A more useful starting point is sorting messages by what they actually require, rather than by habit.

A Framework for Classifying Bank Messages

Most banks send three broad categories of customer message through the same channel, at the same cost, regardless of what each one needs.

• Time-critical, security-sensitive messages. Fraud alerts, login verification, anything where a failed delivery has real consequences. These need SMS's near-universal reach and offline reliability, and should stay on SMS.
• Routine, non-critical notifications. Balance updates, statement availability, payment reminders. These carry none of the urgency of the first category but get billed at the same rate. This is where most of the unnecessary spend sits.
• Conversational and service interactions. Support queries, disputes, account questions. These run as one-way pushes today because SMS doesn't support anything else economically. This is the category with the most room to change.

Sorting messages this way, instead of asking how to make SMS cheaper across the board, is what turns a cost problem into a strategy.

What the Numbers Actually Support

Current WhatsApp Business API rates in Pakistan put utility and authentication messages at roughly 15 to 17 percent below SMS. That's a real number, and a modest one, well short of the dramatic gap sometimes assumed. At bank-level volume, it still adds up: a bank sending 10 million routine notifications a month is looking at roughly Rs 60 million a year in savings on that category alone, without touching a single fraud alert or OTP.

The larger opportunity sits in the third category. SMS has no mechanism for a free reply. WhatsApp does. Once a customer responds, the conversation that follows carries no additional per-message cost for a meaningful window. For support and service interactions, that changes the math entirely: instead of paying for every leg of a multi-message exchange, a bank pays for none of them once the customer has replied.

The Market Is Already Moving

National Bank of Pakistan launched a WhatsApp banking service this April, moving balance inquiries and statement requests onto WhatsApp while keeping its core alerting infrastructure in place. It's a live example of exactly this kind of segmentation: SMS reserved for what actually needs it, WhatsApp handling the rest.

Why This Needs One Platform, Not Three

The practical obstacle isn't deciding which messages belong where. It's running SMS, WhatsApp, and voice as three separate vendor relationships, three sets of delivery data, and no unified view of what's actually reaching customers. A single CPaaS platform handling all three channels, with one routing layer and one set of delivery reporting, is what makes this framework operational. That's what separates a pilot project from a communication strategy a bank can actually run and measure.

Pakistani banks don't have to choose between reliable messaging and affordable messaging. They have to stop sending every message the same way. The banks that work this out first will be running a measurably cheaper, more responsive operation than the ones still treating every notification as identical.

About Monty Mobile: Monty Mobile is a Tier 1 global telecommunications and CPaaS provider, connecting banks and enterprises to SMS, WhatsApp Business API, voice, and RCS from a single platform, with direct carrier and OTT partnerships across the region.

If you're working through this for your own bank, get in touch and we can map it against your actual message volumes.