Answers / Vietnam market
Zalo OA vs SMS vs email for restaurant marketing in Vietnam — which wins?
Written by PEKO Team.Last updated: 05/21/2026.
In Vietnam, Zalo OA wins on read rate (70–90% vs 15–25% for email and 95% but expensive for SMS), cost-per-message, and conversational follow-up. SMS is the urgent-only fallback; email is the long-form newsletter channel.
Published: 05/01/2026
Vietnam is one of the few F&B markets where the highest-reach owned channel is neither SMS nor email — it's Zalo OA. 75M+ Vietnamese phones have it, read rates routinely sit at 70–90%, and broadcast costs are a fraction of SMS.
The right stack for most VN F&B operators is Zalo OA for the bulk of customer touches (loyalty, win-back, broadcast), SMS for urgent or high-value triggers (booking confirmations, OTP), and email for a monthly long-form touch with regulars who opted in.
Zalo OA — primary channel
Loyalty, win-back, new-menu broadcast, conversational service. Cheapest per delivered message, highest read rate, supports rich media and mini-app loyalty.
SMS — urgent only
Reservation confirms, OTP, time-critical offers. Expensive per message — don't use for routine win-back.
Email — monthly newsletter
Lower read rates but valuable for long-form storytelling and segments where Zalo isn't joined.
FAQ
Is Zalo OA suitable for tourists / international customers?
Less so — international customers usually don't have Zalo. For tourist-heavy venues, run a parallel email/SMS capture and use Zalo only for the local segment.
What about Facebook Messenger?
Still useful in some HCMC segments, but reach has shifted to Zalo. Treat Messenger as a supplemental channel, not primary.
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