You will learn

How to set Customer Agent’s tone of voice using a preset or a custom description, and how tone fits with the rest of your Guidance.

Before you begin

You’ll need:

  • An Owner, Admin, or Manager role
  • A brand summary in place (recommended — tone builds on it)

What tone is

Tone of voice is Customer Agent’s overall personality and voice. It shapes how every response feels — warm or formal, playful or buttoned-up — across every skill and every channel.

Tone is one of four Guidance levers, alongside brand summary, communication style rules, and escalation rules. Tone sets the vibe. Communication style rules handle the mechanics (sentence length, emoji use, specific word choices).

Set it up

  1. Navigate to Customer Agent > Guidance, then find the Voice and tone section.
  2. Choose a preset, or select Custom to write your own.
  3. If you chose Custom, write a tone description of up to 500 characters.
  4. Click Save to apply your preset or custom tone. The saved tone applies to subsequent responses.
  5. If the sidebar is closed, click Preview to open it. Select the Preview tab, then send sample questions to see how responses sound with the saved tone.

Tone presets

Pick a preset if one of these matches your brand. Most brands start here.

  • Neutral — Direct and informational. Default option. Works well for most brands and gets out of the way.
  • Professional — Formal and courteous. Suited for B2B, financial services, and brands with a measured voice.
  • Friendly — Warm and approachable. Good for lifestyle, wellness, and consumer brands that want to feel personable.
  • Playful — Casual and enthusiastic. Right for brands with a fun, energetic identity.

What each preset sounds like

A shopper asks: “Where can I find your shipping policy?”

Custom tone

Pick Custom when none of the presets fit your brand — for example, if your voice is highly distinctive or built around a specific persona.

A good custom tone is:

  • A single paragraph, ideally 40–80 words, with a maximum of 500 characters
  • Specific — concrete adjectives and analogies, not generic words like “friendly” or “professional”
  • Clear about what your brand IS and IS NOT — call out the personality, and note what to avoid

Examples of custom tones

Good:

Speak like a knowledgeable friend who’s been working in beauty for 15 years. Confident but never condescending. Use plain language; explain ingredient names when they come up. Never sound like a chemistry textbook. Skip exclamation points unless they’re earned. We don’t oversell; we help.

Too vague (avoid):

Be friendly and helpful but also professional. Make customers feel good.

The vague version doesn’t give Customer Agent anything specific to work with. The good version gives it a persona, voice patterns to match, and what to avoid.

How tone interacts with other Guidance

  • Brand summary gives context (what the brand is). Tone gives voice (how it speaks).
  • Communication style rules are specific writing guidelines layered on top of tone. Use rules for things like “keep responses under 3 sentences” or “use bullet lists when comparing products.” Enable and save the rules you want Customer Agent to use, then test the responses.
  • Escalation rules override tone when they fire. Hand-offs follow your handoff configuration regardless of tone.

Next steps

  • Add and enable communication style rules to give Customer Agent specific writing guidelines
  • Configure escalation rules for situations that should hand off to a human
  • Test in the preview sidebar to see how your tone sounds in sample conversations. See How to test your Customer Agent.

Additional resources

  • Getting started with Customer Agent

    Learn how to activate Klaviyo's Customer Agent, an AI-powered tool that provides instant support to your website visitors. Customer Agent ingests information from your Shopify store, and learns any additional information you provide, to answer shopper inquiries across web chat, email, SMS, and WhatsApp.

  • Managing Customer Agent settings

    Learn how to ensure shopper inquiries are handled smoothly by selecting a handoff method for your Customer Agent. A handoff occurs when Customer Agent can’t resolve an inquiry and needs to escalate the conversation to a human support agent.

  • How to test your Customer Agent

    Learn how to strengthen your Customer Agent’s ability to resolve shopper inquiries by testing its responses and adding knowledge for any gaps you discover.

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