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Multilingual Customer Agent: now responding in whatever language your shoppers write

Profile photo of author Albert Lam
Albert Lam
5 min read
Klaviyo news
June 3, 2026

It's 2 p.m. on a Tuesday and a French skincare brand just got three support messages. One in Spanish, one in German, one in English. All within the same hour. Each customer expects a fast, fluent reply in their language. Not a stilted machine translation. Not a redirect to an English-only FAQ. They want a real answer, in words they recognize.

Until now, serving multiple languages meant one of three bad options: duplicate your entire agent configuration for every market, hire multilingual support staff you may not be able to find, or force international shoppers into English and hope they stick around. That friction costs sales.

That changes today with multilingual Customer Agent. Customer Agent now automatically detects and responds in whatever language a shopper writes in, across web chat, email, SMS, and WhatsApp.

This means one configuration for your team, with responsiveness in over 100 languages and across every channel.

Why multilingual support matters right now

Brands aren't dabbling in international expansion anymore. They're committing to it. And language coverage is non-negotiable when you're selling across borders.

The cost of English-only AI support is real, even when it's hard to measure directly. International shoppers who can't get help in their own language abandon carts, file more tickets, or pick a competitor who does offer native-language service.

For a brand entering a new market, the gap between a successful pilot and a stalled launch can come down to something this simple: can shoppers get answers without switching languages?

Customer support and service in a customer’s own language is a customer experience tactic, and one that impacts the reputation and perception of a brand in any market.

How multilingual Customer Agent works

Setup is the part most teams dread with international expansion. More markets usually means more configurations, more maintenance, more things to keep in sync. Multilingual Customer Agent works differently. Brands set up Customer Agent once, in English. They write their skill instructions, return policies, and brand guidelines a single time. No duplicate setup per language. No separate agent for each market. From there, Customer Agent handles the language layer on its own. It works from that English knowledge base, detects the language each shopper writes in, and replies fluently in it, across 100+ supported languages. A shopper messages in Portuguese, and they get a fluent Portuguese reply drawn from the same English setup the team already maintains. Nothing to toggle. No parallel configurations to keep in sync.

WhatsApp as a service channel for global brands

In much of the world, WhatsApp is a default messaging channel. Shoppers reach brands there the same way they text friends and family. Expecting those shoppers to switch to email or navigate a help center adds friction that most brands can't afford in markets where they're still building trust.

Customer Agent on WhatsApp means brands can meet shoppers in their preferred channel and their preferred language at the same time. That removes two layers of friction in a single interaction: where do I reach you, and can you understand me.

What this means for brands expanding internationally

  • Pilot one market, then expand without rebuilding. Brands can launch Customer Agent in a single country, prove the value, then open additional markets without recreating their service infrastructure for each language. WhatsApp lowers the barrier even further: the messages Customer Agent sends there are free, so brands only pay when it resolves a conversation. That makes a single-market pilot cost-effective to run, because the cost lands on outcomes, not on every message.
  • One setup replaces a multilingual support team. Instead of hiring native speakers for every market or managing multiple agent configurations in parallel, brands maintain one setup and let Customer Agent handle the language layer automatically. The hours that would go toward duplicating configurations, translating FAQ content, and training separate agents go toward improving the quality of the answers themselves.
  • Every interaction enriches the customer profile. Because Customer Agent sits inside the same autonomous B2C CRM where brands run marketing, service, and analytics, every multilingual support interaction adds to the unified profile. A WhatsApp conversation in Spanish with a shopper in Madrid informs smarter segmentation, more relevant campaigns, and better service the next time that customer reaches out, regardless of channel.

Get started with multilingual Customer Agent

Multilingual Customer Agent is available to Customer Agent customers. Configure your agent once and start serving shoppers in their language, across web chat, email, SMS, and WhatsApp.

Explore Customer Agent now.

Albert Lam
Albert Lam
Albert Lam is a Senior Manager of Product Marketing at Klaviyo, where he leads product marketing for the mid-market segment. He joined Klaviyo in 2025 after more than three years at Intuit, where he held product marketing roles spanning enterprise solution growth and mid-market B2B monetization. Albert holds an MBA in marketing from William & Mary's Raymond A. Mason School of Business and completed the Stanford LEAD program at Stanford Graduate School of Business. He is based in San Francisco.

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