Klaviyo Agency: when to hire one?

Are you ready to take your email marketing efforts to the next level? Then a Klaviyo agency might be exactly what you need.

This guide explains what Klaviyo is, in what contexts to use a specialized agency, and what benefits you can derive from it. You will also discover practical tips for choosing the Klaviyo agency that is right for your business. Whether you are a beginner e-merchant or an experienced marketing manager, you will leave with a clear plan.

Introduction to Klaviyo

Since its launch, Klaviyo has established itself as the reference platform for automating email and SMS campaigns. According to Klaviyo (2024), brands using its solution see an average of +29% revenue from emailing within the first six months.

The evolution of Klaviyo in digital marketing

The platform has evolved from a simple emailing tool to a complete marketing automation ecosystem. With its segmentation, personalization, and analysis features, Klaviyo is now considered a pillar of e-commerce growth. HubSpot and Litmus confirm: multi-channel personalization increases ROI by 40% on average.

When to use a Klaviyo agency?

Here are situations where an agency is a strategic accelerator:

• You need advanced segmentation and complex scenarios (abandoned cart, product re-engagement, cross-sell).
• You want to scale your campaigns without burdening your internal teams.
• Your emails perform below standards (median open rate: 34.5% in e-commerce, source Klaviyo Benchmark 2024).
• You are looking for support with strategy + execution (design, content, A/B testing).

The benefits of a Klaviyo agency

Collaborating with a Klaviyo agency means accessing certified expertise, saving time, and achieving measurable performance. Concrete examples:

• +20% click-through rate after advanced segmentation.
• Open rate multiplied by 1.5 thanks to improved deliverability.
• Automated campaigns generating recurring revenue without manual action.

Testimonial from Sarah, e-merchant: "Our open rate increased from 18% to 30% in 2 months thanks to a Klaviyo agency."

How to choose the right Klaviyo agency

Here are the criteria to evaluate:

• Technical expertise: Klaviyo certification, e-commerce integrations (Shopify, Magento, WooCommerce…)
• Services offered: onboarding, email design, automation, continuous optimization
• Case studies: tangible results with other clients
• Clear pricing: understanding the cost/value added ratio

Resources and benchmarks

• Klaviyo Blog – Trends and benchmarks
• Litmus Report – Data on email campaign effectiveness
• HubSpot Resources – Email marketing strategies