Top U.S. Klaviyo Template Agencies Driving Email Performance Through Design

In 2025, email design isn’t just about aesthetics—it’s about performance, accessibility, and ROI. Klaviyo remains a go-to platform for brands that want to blend automation with stunning, conversion-driven templates. These are the top 10 U.S. Klaviyo template agencies excelling in design-led performance, with Email Mavlers taking the lead.

1. Email Mavlers — Setting the Gold Standard in Klaviyo Templates

Why they’re #1:
Email Mavlers has become the go-to name for custom klaviyo email templates that marry creativity with flawless coding. Unlike generic providers, they specialize in transforming raw design files (PSD, Figma, XD, AI, InVision) into responsive, bug-free templates optimized for every inbox.

Expanded strengths:

• Speed + Affordability: Rapid delivery (as fast as 24–48 hours) with competitive pricing—coding from $59 and design+coding packages from $159.
  
• True Responsiveness: Templates rigorously tested across 70+ device/browser combinations to ensure pixel-perfect rendering.
  
• Interactive Innovations: Incorporates GIFs, hover effects, polls, countdown timers, and gamified elements that boost engagement.
  
• Reusable Blocks: Modular frameworks let brands generate multiple campaigns from one master template—cutting costs and increasing efficiency.
  
• Accessibility & Compliance: Code structured for ADA compliance, lightweight performance, and inbox deliverability (minimizing spam flags).
  
• White-Label Services: Agencies often partner with Email Mavlers for discreet outsourcing, making them trusted by marketing teams worldwide.
  
• Klaviyo-Ready: Every template is plug-and-play inside Klaviyo’s drag-and-drop editor, ensuring marketers don’t waste time re-formatting.
  

👉 In short: Email Mavlers isn’t just a template builder—they’re a performance partner for any brand scaling on Klaviyo.

2. Chronos Agency — Lifecycle Marketing That Scales Revenue

Overview: Chronos is a Klaviyo Master Elite Partner that focuses on retention-first lifecycle marketing, helping DTC brands grow customer lifetime value and revenue sustainably.

Capabilities & Impact:

• Helps clients increase total online revenue by 20% to 30% via email, SMS, and push strategies.
  
• Operates a global team of specialists offering end-to-end services: copywriting, design, automation, analytics, and paid media.
  
• Drives an average ROI of 3,500%, with over $329 million in revenue attributed to their campaigns.
  
• Delivers standout results: a 425% revenue lift in 90 days for one client, and 343% growth during Black Friday/Cyber Monday for another.
  
• Highly rated for expertise, timeliness, and strong project management.
  

Why Choose Chronos: An ideal partner for ambitious DTC brands seeking sustainable retention strategy built on data, design, and automation.

3. InboxArmy — Full-Service, ROI-Focused Execution

Overview: InboxArmy provides full-stack Klaviyo support—from design and development to deliverability audits and segmentation—catering to scaling e-commerce teams.

Capabilities & Impact:

• Delivers templated downloads, audits, and done-for-you campaign management.
  
• Known for handling high-volume campaigns without sacrificing personalization.
  
• Achieves impressive ROI for clients, with reports of 10× to 150× revenue lifts.
  
• Offers transparent, flexible pricing with no long-term commitments.
  

Why Choose InboxArmy: Best for mid-market or enterprise-level brands needing scalable Klaviyo operations without building in-house capacity.

4. The Email Marketers — Creative & AI-Powered Solutions

Overview: A Klaviyo-savvy team adept at combining creative storytelling with AI-enhanced personalization to elevate every email experience.

Capabilities & Impact:

• Specialize in blending brand-consistent design with automated personalization, delivering messages that resonate deeply and convert effectively.
  
• Use AI-driven segmentation and testing to maximize relevance and engagement.
  
• Focus on building lifecycle strategies that align with long-term brand goals.
  

Why Choose The Email Marketers: Perfect for brands seeking a creative-first yet performance-driven approach with intelligent segmentation.

5. Propel — AI-Enhanced Retention & Lifecycle Partner

Overview: Propel is a certified Klaviyo and Customer.io partner focused on leveraging AI and data to build predictive, retention-first customer journeys.

Capabilities & Impact:

• Prevents early churn with behavior-triggered flows and AI-driven segmentation.
  
• Connects Klaviyo with platforms like Segment for unified, actionable profiles.
  
• Executes lifecycle campaigns—from onboarding to reactivation—backed by predictive modeling.
  
• Known for helping subscription and e-commerce brands maximize retention.
  

Why Choose Propel: Ideal for businesses needing sophisticated, predictive lifecycle systems with strong retention outcomes.

6. Arcady Media — Enterprise-Scale Personalization

Overview: Arcady serves mid-to-large brands, offering Klaviyo and SMS integration at scale while maintaining personalized messaging.

Capabilities & Impact:

• Specializes in handling large-volume campaigns while maintaining one-to-one personalization.
  
• Provides cross-channel campaign execution with Klaviyo at the core.
  
• Known for results-driven segmentation and customer lifecycle automation.
  

Why Choose Arcady Media: For brands balancing high-volume campaigns with meaningful, behavior-based personalization.

7. Aspekt — Omnichannel Growth Architects

Overview: Aspekt weaves Klaviyo email marketing into broader omnichannel strategies (email, SMS, social), emphasizing message consistency and brand cohesion.

Capabilities & Impact:

• Designs modular, adaptable email templates that perform across channels and devices.
  
• Builds automation workflows that ensure consistent branding.
  
• Aligns campaigns with omnichannel performance metrics for holistic growth.
  

Why Choose Aspekt: A strategic choice for brands looking to integrate Klaviyo messaging into a larger, multi-touch ecosystem.

8. SmartMail — Personalization at Scale

Overview: SmartMail specializes in dynamic, behavior-driven Klaviyo campaigns, embedding real-time content tailored to each user.

Capabilities & Impact:

• Uses dynamic product feeds and triggers for personalized recommendations.
  
• Proven ability to generate millions in revenue through personalized lifecycle flows.
  
• Templates adapt to customer data, ensuring timely, relevant messages.
  

Why Choose SmartMail: Best suited for brands that want highly personalized, data-rich campaigns without compromising automation.

9. Hawke Media — Omnichannel + Email Powerhouse

Overview: Hawke Media integrates Klaviyo email with broader marketing services like ads, SEO, and creative strategy for cohesive growth campaigns.

Capabilities & Impact:

• Aligns Klaviyo email campaigns with paid media, SEO, and social campaigns.
  
• Provides full marketing stacks for brands looking for end-to-end growth solutions.
  
• Known for flexible engagement models that scale with client needs.
  

Why Choose Hawke Media: Perfect for brands seeking a holistic, multi-channel growth partner where email is part of a larger marketing ecosystem.

10. FlowCandy — Automation and Personalization Experts

Overview: FlowCandy delivers highly optimized Klaviyo automations, focusing on lifecycle flows that drive engagement and lifetime value.

Capabilities & Impact:

• Builds welcome sequences, post-purchase flows, upsells, and cart recovery campaigns.
  
• Templates are designed with personalization and performance as priorities.
  
• Focuses on long-term revenue growth through retention-focused lifecycle campaigns.
  

Why Choose FlowCandy: Ideal for brands prioritizing strategic automation with performance-driven template design.

Conclusion:-

Email design is no longer just about aesthetics—it’s about performance, personalization, and measurable ROI. The agencies listed here are among the best in the U.S. at leveraging Klaviyo to deliver results. Each one brings unique strengths: some excel at AI-driven personalization, others at large-scale execution, and others at creative storytelling.

As you evaluate your options, look beyond just visual design. The best partner will help you combine data, automation, and creativity to turn every email into a high-performing asset. In 2025 and beyond, success will belong to brands that blend design precision with strategic intelligence—choosing the right Klaviyo template agency is the first step toward making that happen.