5 Best Klaviyo Email Marketing Agencies in US [2025]

If you're looking for hands-off, high-performing Klaviyo services, these agencies are equipped to elevate your email marketing to the next level.

Best Klaviyo Email Marketing Agencies

After evaluating over 30 agencies based on factors like pricing, service offerings, client focus, and expertise, here are the top Klaviyo email marketing agencies to consider:

1. InboxArmy – Best email solutions overall.
2. UN/COMMON Agency – Best for global e-commerce brands.
3. DIDO Agency – Best for high-touch strategies for e-commerce brands.
4. The Email Marketers – Best for lifecycle optimization for DTC brands.
5. SmartMail – Best for growing Shopify brands.

Review of Top US Klaviyo Email Marketing Agencies

1. InboxArmy

HQ: Grapevine, TX

Rating (Clutch): 4.9

InboxArmy is a full-service Klaviyo email marketing agency, known for its ability to scale high-volume email operations. They specialize in advanced lifecycle marketing and retention strategies tailored to e-commerce and SaaS businesses. As a Klaviyo Silver Master Partner, they provide customized solutions across industries like retail, healthcare, real estate, automotive, and more. Their enterprise-grade services make them one of the best Klaviyo email marketing agencies.

Services:

• Full-service Klaviyo email setup and migration
• Lifecycle and retention marketing
• Template/campaign design & management
• Deliverability optimization
• Advanced segmentation & A/B testing
• ESP migrations (specializing in Shopify, BigCommerce, etc.)
• SMS marketing integration

Pricing:

• Minimum monthly managed services: $1,500/month
• Email Template Design/Audit: from $500
• Email Marketing Strategy/Audit: from $2,500
• Email Design/Coding: $950 per template
• Campaign Management: $1,100/month (for 2 campaigns)

Best for:

Mid-market and enterprise businesses needing scalable email marketing, advanced segmentation, and lifecycle marketing, especially in e-commerce and SaaS.

2. The Email Marketers

HQ: Los Angeles, CA

Rating (Clutch): 4.5

The Email Marketers is a full-service Klaviyo email marketing agency known for its boutique, creative approach to email strategy. They specialize in crafting personalized campaigns that focus on lifecycle optimization, with a strong emphasis on creative design and advanced Klaviyo flows. The agency serves industries such as DTC, e-commerce, and ethical fashion, delivering high-touch, results-driven email marketing services.

Services:

• Full-service Klaviyo management
• Lifecycle & flow strategy and setup
• Custom template design & creative
• Advanced segmentation, campaign copywriting
• Performance and revenue reporting, A/B testing
• Pricing: Monthly Retainers: $2,500–$10,000/month

Best for:

Design-driven DTC and e-commerce brands that value personalized support.

3. UN/COMMON Agency

HQ: Philadelphia, PA

Rating (Clutch): N/A

UN/COMMON Agency is a full-service Klaviyo email marketing agency that focuses on delivering sophisticated, multi-channel marketing strategies for high-growth DTC and enterprise e-commerce brands. They specialize in lifecycle marketing, conversion optimization, and creative services, serving industries such as beauty, lifestyle, and high-end e-commerce.

Services:

• Klaviyo lifecycle & retention marketing (flows, campaigns, segmentation)
• Shopify Plus design/development
• Conversion optimization, analytics, CRO
• Creative services (branding, design, content)

Pricing:

• Monthly Retainers: $3,000–$10,000+/month
• Project-Based Fees: $1,500–$7,500+
• Enterprise Retainer: $8,000–$15,000+/month

Best for:

Ambitious DTC and large e-commerce brands seeking high-performance marketing at scale.

4. DIDO Agency

HQ: Brooklyn, NY

Rating (Clutch): 4.9

DIDO Agency is a full-service Klaviyo email marketing agency specializing in highly personalized, data-driven campaigns. They focus on creating tailored email strategies and automations, particularly for e-commerce and DTC brands in industries such as fashion, beauty, health, and B2B.

Services:

• Comprehensive email strategy and audit
• Klaviyo automation setup (all flow types)
• SMS marketing campaigns
• Custom template design/copy

Pricing:

• Monthly Retainers: $3,000–$5,000/month
• Projects/Setups: Custom quotes
• Hourly Consulting: $100–$149/hr

Best for:

Growing DTC and e-commerce brands needing hands-on support.

5. SmartMail

HQ: New York, NY

Rating (Clutch): 3.9

SmartMail is a Klaviyo email marketing agency specializing in automation and advanced flows for e-commerce businesses. Known for its hands-off approach, SmartMail handles everything from campaign strategy to execution, making it an ideal choice for busy brands looking to scale their email marketing without in-house expertise.

Services:

• Klaviyo account audit and migration
• Strategy and campaign copy/design
• Flow setup and automation
• List growth & segmentation

Pricing:

• Campaign Management: $250 per campaign
• Automation Setup: $600 per automation
• Monthly Retainers: $500–$2,000/month

Best for:

• E-commerce brands, especially those using Shopify.

How do I choose the best Klaviyo email marketing agency?

Choosing the best agency depends on your business size, goals, and specific needs. Look for agencies with proven expertise in your industry, a clear understanding of your objectives, and case studies.

Ask about their experience with automation flows, and integration with other platforms you already use. It’s also worth considering their pricing model, reporting transparency, and the level of input they provide beyond execution.