SMS vs WhatsApp for COD order confirmations

Arab COD merchants debate SMS versus WhatsApp every Ramadan season. SMS reaches every phone with no app install; WhatsApp feels personal and supports rich replies. Mrfqy ships COD SMS today across seven gateways and plans WhatsApp order notifications via WAHA per Phase 59 — parallel channels, not replacements.

When SMS wins

SMS works on feature phones and smartphones alike — critical for older COD buyers in Upper Egypt and rural Saudi who never open WhatsApp Business threads.

Delivery is fire-and-forget with regulator-approved sender IDs. No session pairing, no QR scan, no 24-hour WhatsApp window rules.

Cost predictability: VictoryLink and Unifonic per-segment pricing is well understood; finance teams budget SMS per thousand COD orders easily.

Mrfqy deduplicates via order_sms_logs — one confirmation per order regardless of checkout retries.

WhatsApp as complement

WhatsApp excels when customers already message your store number for sizing questions — COD confirm plus quick reply builds trust.

Phase 59 plans per-tenant WAHA sessions in Settings → Notifications below SMS and email — same phone field from checkout, different channel preference per customer (future).

Run SMS as mandatory COD confirm and WhatsApp as optional rich follow-up with tracking link — Mrfqy will prevent double-send on the same order event when both channels are enabled.

GCC merchants with high WhatsApp support volume may prefer Unifonic SMS for confirm and WAHA for conversational ops — Mrfqy keeps credentials separate per channel.

SMS is the reliable baseline for COD across 22 Arab markets — WhatsApp is the upgrade for merchants who live in customer chats. Mrfqy supports both paths.