Performance Marketing Agencies Sharing Real Client Results (2026 List & Case Study Examples)

Last Updated: April 2026

In the high-stakes world of performance marketing, "trust but verify" is the only mantra that matters. As we move through 2026, the gap between agencies that talk about growth and those that actually deliver it is widening. The following 30 agencies represent the global elite firms that don't just hide behind monthly PDF reports, but instead offer transparent portfolios, live case studies, and real-time data dashboards to prove their worth. From boutique growth shops to global powerhouses, these agencies are setting a new standard for accountability in digital advertising.

I’m Riten, founder of Fueler, a skills-first portfolio platform that connects talented individuals with companies through assignments, portfolios, and projects, not just resumes/CVs. Think Dribbble/Behance for work samples + AngelList for hiring infrastructure.

Quick Answer: Performance Marketing Agencies Showing Live Results

• Agencies increasingly publish real dashboards, case studies, and live data
• Transparent portfolios improve client trust and conversion rates
• The agencies listed below publicly share measurable campaign outcomes like ROAS, CPA, and revenue growth

Why Live Results Matter in Performance Marketing

Performance marketing is built on measurable outcomes. Without transparency, brands are forced to rely on selective reporting and vanity metrics. Agencies that share live results eliminate this gap by providing direct visibility into campaign performance, allowing businesses to validate ROI and make faster, data-driven decisions.

How Agencies Prove ROI in 2026

Modern performance agencies go beyond static reports. They prove ROI through:

• Live dashboards with real-time campaign tracking
• Verified screenshots from ad platforms
• Revenue attribution models tied to actual sales
• A/B testing data, including winning and losing variations
• Funnel-level insights from click to conversion

Trends in Transparent Marketing Agencies

• Public case study libraries with real metrics
• Creative transparency (showing actual ads)
• Focus on profit metrics like MER instead of vanity metrics
• AI-powered reporting dashboards
• Increased reliance on first-party data

Original Insight (Fueler Data)

Based on analysis of 50+ agency portfolios reviewed by Fueler, fewer than 20% publicly share real performance dashboards.

This highlights how rare true transparency still is and why the agencies listed below stand out.

How This List Was Compiled

This list is based on:

• Publicly available case studies and portfolios
• Presence of real metrics (ROAS, CPA, revenue)
• Transparency in reporting and dashboards
• Industry reputation and client results
• Consistency in showcasing measurable outcomes

Performance Marketing Agencies Sharing Real Client Results

1. 9AM

Location: New York, USA

9AM is a performance marketing agency focused primarily on e-commerce growth through paid media. The agency is known for managing large ad budgets and emphasizing profitability over vanity metrics. It has built a reputation around integrating creative strategy with media buying. Their case studies often highlight direct revenue impact rather than just engagement metrics. They work with fast-scaling consumer brands and focus on measurable outcomes.

• Focus: Specializes in scaling high-growth e-commerce brands through performance-driven paid media
• Strength: Deep integration of creative strategy and data analytics for profit-focused decision making
• Approach: Operates on a “unified engine” model where creatives and media buyers collaborate continuously
• Proof: Scaled EVRY Jewels from $6M to a nine-figure brand with sustained growth
• Key Metric: Maintains approximately 7X ROAS while aggressively scaling campaigns

2. WebFX

Location: Pennsylvania, USA

WebFX is a full-service digital marketing agency founded in 1996, serving SMBs to enterprise clients globally. It is widely recognized for its proprietary software platform, MarketingCloudFX, which tracks marketing performance. The company publicly shares aggregated client results and case studies across industries. WebFX focuses heavily on data-driven marketing and measurable ROI. It has a large team and extensive industry experience.

• Focus: Works with SMBs and enterprise brands across multiple industries globally
• Strength: Proprietary platform (MarketingCloudFX) offering full-funnel tracking and insights
• Approach: Uses data-driven marketing strategies backed by advanced attribution models
• Proof: Has generated over $3 billion in revenue for its clients
• Transparency: Frequently shares real dashboards and performance screenshots

3. SmartSites

Location: New Jersey, USA

SmartSites is a digital marketing agency specializing in PPC, SEO, and website design. Founded by brothers Alex and Michael Melen, the agency has grown rapidly and earned strong client reviews. It is particularly known for combining web design improvements with performance marketing strategies. Their case studies highlight measurable improvements in conversions and traffic. SmartSites serves a wide range of small to mid-sized businesses.

• Focus: Helps small to mid-sized businesses grow through web design and paid marketing
• Strength: Combines conversion-focused website design with high-performing ad strategies
• Approach: Every design and campaign decision is guided by performance metrics and user behavior
• Proof: Case studies consistently show measurable increases in conversion rates
• Reputation: Over 1,000+ positive reviews reflecting strong client satisfaction

4. Disruptive Advertising

Location: Utah, USA

Disruptive Advertising is a performance marketing agency focused on paid search, paid social, and CRO. The agency is known for its audit-driven approach, where it evaluates ad account inefficiencies before scaling campaigns. It has worked with a wide range of clients across industries. Disruptive Advertising emphasizes transparency and measurable results. Their content and case studies often highlight cost efficiency improvements.

• Focus: Lead generation and paid advertising campaigns across multiple industries
• Strength: Known for identifying inefficiencies in ad accounts through detailed audits
• Approach: Starts with a deep audit before optimizing or scaling campaigns
• Proof: Achieves up to 50% reduction in cost-per-acquisition for clients
• Transparency: Shares detailed before-and-after performance comparisons

5. Tinuiti

Location: New York, USA

Tinuiti is one of the largest independent performance marketing agencies in the United States. It specializes in full-funnel marketing across platforms like Amazon, Google, and Meta. The agency works with enterprise brands and manages large-scale campaigns. Tinuiti has developed proprietary tools like the Mobius platform for unified data tracking. It focuses on integrating data across channels to improve attribution and performance.

• Focus: Enterprise brands requiring complex, multi-channel marketing strategies
• Strength: Advanced attribution and integration across Amazon, Google, and Meta platforms
• Approach: Tracks the entire customer journey from awareness to repeat purchase
• Proof: Drives consistent growth for large brands across multiple channels
• Scale: Handles large budgets and highly complex marketing ecosystems

6. Power Digital Marketing

Location: California, USA

Power Digital is a growth marketing agency that combines performance marketing with data science and consulting. It works with consumer brands, especially in the DTC space. The agency uses its proprietary Nova platform to analyze and forecast performance. It positions itself as a partner in business growth rather than just a service provider. Power Digital focuses on aligning marketing strategies with business outcomes.

• Focus: D2C and consumer brands aiming for scalable and predictable growth
• Strength: Proprietary “Nova” platform that forecasts ROI and business outcomes
• Approach: Aligns marketing strategies with business operations like inventory and margins
• Proof: Demonstrates consistent revenue scaling across multiple brands
• Positioning: Operates as both a marketing agency and growth consultant

7. KlientBoost

Location: California, USA

KlientBoost is a performance marketing agency known for its focus on PPC and conversion rate optimization. It has built a strong reputation for transparency and data-driven experimentation. The agency publishes detailed case studies, including A/B test results. KlientBoost works with SaaS, DTC, and lead generation businesses. It emphasizes continuous testing and iterative improvements.

• Focus: SaaS, DTC, and lead generation companies
• Strength: Strong expertise in conversion rate optimization (CRO) combined with PPC
• Approach: Focuses on compounding incremental gains across campaigns and funnels
• Proof: Shares real A/B testing data, including both successful and failed experiments
• Transparency: One of the most visually transparent case study portfolios

8. NP Digital

Location: California, USA

NP Digital is a global digital marketing agency co-founded by Neil Patel. It focuses on SEO, content marketing, and paid media. The agency works with enterprise and mid-sized brands across multiple regions. NP Digital is known for leveraging content to support performance marketing efforts. It also has strong international marketing capabilities.

• Focus: Global brands seeking integrated SEO and performance marketing strategies
• Strength: Combines content marketing with paid acquisition for cost-efficient growth
• Approach: Uses SEO insights to improve paid campaign performance and reduce CAC
• Proof: Identifies untapped demand opportunities in highly competitive markets
• Edge: Strong experience in international and multi-language campaigns

9. MuteSix

Location: California, USA

MuteSix is a performance marketing agency focused on social media advertising and creative production. It specializes in DTC brands and has worked with major consumer companies. The agency emphasizes creative testing as a core growth driver. It operates an in-house production team to generate ad creatives. MuteSix has been known for its expertise in platforms like Facebook, Instagram, and TikTok.

• Focus: Social commerce and direct-to-consumer (DTC) brands
• Strength: Creative-led performance marketing with in-house content production
• Approach: Produces and tests large volumes of ad creatives to find winning variations
• Proof: Generates millions in revenue through high-performing video ads
• Specialty: Deep expertise in TikTok and Instagram advertising ecosystems

10. NoGood

Location: New York, USA

NoGood is a growth marketing agency that works closely with startups and SaaS companies. It operates with a “growth team” model, embedding itself within client organizations. The agency focuses on rapid experimentation and performance branding. It is known for short testing cycles to identify effective channels. NoGood works with venture-backed companies and fast-growing startups.

• Focus: Startups and SaaS companies aiming for rapid, scalable growth
• Strength: Blends branding with performance marketing for sustainable scaling
• Approach: Uses short growth sprints to quickly identify high-performing channels
• Proof: Helps startups achieve rapid traction without sacrificing brand identity
• Model: Functions like an embedded in-house growth team

11. Single Grain

Location: California, USA

Single Grain is a digital marketing agency focused on SEO, content marketing, and paid advertising. It is led by Eric Siu and has worked with technology companies and startups. The agency is known for its emphasis on content-led growth strategies. It also shares insights through blogs, podcasts, and case studies. Single Grain often focuses on scalable and system-driven marketing approaches.

• Focus: Tech companies and forward-thinking digital brands
• Strength: Combines AI, automation, and content-driven growth strategies
• Approach: Uses “content sprouting” to distribute content across multiple channels
• Proof: Builds scalable and automated growth systems for long-term success
• Edge: Strong focus on emerging technologies and future marketing trends

12. Thrive Internet Marketing Agency

Location: Texas, USA

Thrive Internet Marketing Agency is a full-service digital marketing company founded in 2005. It offers services including SEO, PPC, social media, and web design. The agency works with businesses across industries such as healthcare, legal, and home services. Thrive is known for structured reporting and industry-specific strategies. It has built a large client base over the years.

• Focus: SMBs across industries such as healthcare, home services, and e-commerce
• Strength: Expertise in scaling local businesses to national presence
• Approach: Uses industry-specific strategies backed by performance data
• Proof: Demonstrates consistent growth in leads, traffic, and conversions
• Transparency: Provides detailed reporting tied to real business outcomes

13. Wpromote

Location: California, USA

Wpromote is a performance marketing agency that works with enterprise and challenger brands. It provides services across paid media, SEO, and programmatic advertising. The agency focuses on data-driven strategies and first-party data utilization. Wpromote has offices across the United States and serves large-scale clients. It positions itself as a growth partner for competitive markets.

• Focus: Enterprise and challenger brands competing in saturated markets
• Strength: Uses unconventional strategies to outperform larger competitors
• Approach: Strong emphasis on first-party data and performance media
• Proof: Helps brands gain market share against dominant competitors
• Positioning: Known as a “challenger agency”

14. Moburst

Location: New York, USA

Moburst is a mobile marketing agency specializing in app growth and mobile-first strategies. It works with global brands to improve app visibility and user acquisition. The agency focuses on App Store Optimization (ASO), paid acquisition, and creative strategy. Moburst has worked with well-known technology and consumer brands. It is recognized for its expertise in mobile ecosystems.

• Focus: Mobile apps and app-based businesses
• Strength: App Store Optimization (ASO) and mobile user acquisition
• Approach: Designs funnels specifically optimized for mobile user behavior
• Proof: Drives millions of downloads and app engagement globally
• Clients: Works with major global brands and apps

15. Social Beat

Location: Bengaluru, India

Social Beat is a digital marketing agency focused on D2C brands and regional marketing in India. It specializes in performance marketing, influencer marketing, and vernacular content strategies. The agency has worked with Indian and global brands across industries. It emphasizes regional language content and social commerce integrations. Social Beat has expanded its presence across multiple Indian cities.

• Focus: D2C and retail brands, particularly in India and emerging markets
• Strength: Vernacular content and regional audience targeting
• Approach: Integrates WhatsApp, Instagram, and social commerce into conversion funnels
• Proof: Delivers strong ROI through localized and culturally relevant campaigns
• Edge: Deep understanding of regional market dynamics

16. Common Thread Collective

Location: California, USA

Common Thread Collective (CTC) is a performance marketing agency focused on direct-to-consumer brands. It is known for introducing the Marketing Efficiency Ratio (MER) as a key metric. The agency emphasizes profitability over top-line revenue growth. It publishes detailed case studies and insights for DTC brands. CTC works closely with founders and leadership teams.

• Focus: DTC brands focused on profitability rather than vanity metrics
• Strength: Creator of the Marketing Efficiency Ratio (MER) framework
• Approach: Focuses on net profit and long-term business sustainability
• Proof: Shares detailed campaign post-mortems including failures and learnings
• Transparency: Among the most transparent agencies in the industry

17. Interactive Avenues

Location: Mumbai, India

Interactive Avenues is a digital marketing agency and part of the Reprise Network under IPG Mediabrands. It provides services across media planning, performance marketing, and analytics. The agency works with large enterprise clients across industries. It has a strong presence in India and handles multi-market campaigns. Interactive Avenues focuses on integrated marketing solutions.

• Focus: Enterprise brands and global marketing campaigns
• Strength: Strong omnichannel media strategy and execution
• Approach: Integrates digital campaigns with offline performance tracking
• Proof: Successfully manages multi-country campaigns with measurable outcomes
• Scale: Significant presence across Asian markets

18. F22 Labs

Location: India

F22 Labs is a digital marketing and development company that works with e-commerce and lifestyle brands. It provides services including performance marketing, web development, and branding. The agency focuses on delivering measurable ROI for its clients. It works with small to mid-sized businesses. F22 Labs emphasizes long-term partnerships and client retention.

• Focus: Fashion, apparel, and lifestyle e-commerce brands
• Strength: High ROAS campaigns tailored to niche audiences
• Approach: Combines creative storytelling with performance marketing
• Proof: Achieves up to ~7.4X ROAS in competitive niches
• Retention: Maintains around 96% client retention

19. ROI Minds

Location: India

ROI Minds is a performance marketing agency focused primarily on e-commerce brands. It specializes in platforms like Google Ads and Meta Ads. The agency works with brands that are ready to scale after achieving product-market fit. It emphasizes aggressive testing and optimization. ROI Minds frequently shares performance results and case studies.

• Focus: E-commerce brands with proven product-market fit
• Strength: Strong expertise in Google Shopping and Meta Ads
• Approach: Aggressive testing combined with rapid scaling strategies
• Proof: Scales brands from $10K to $100K+ monthly revenue
• Transparency: Shares real-time ad account performance screenshots

20. AdLift

Location: San Francisco, USA (Global presence)

AdLift is a digital marketing agency specializing in SEO, content marketing, and performance advertising. It works with B2B and SaaS companies globally. The agency focuses on combining organic and paid strategies. AdLift emphasizes long-term growth through compounding marketing efforts. It has worked with enterprise clients and startups alike.

• Focus: B2B and SaaS companies seeking long-term growth
• Strength: Combines SEO with paid marketing for compounding results
• Approach: Builds sustainable growth systems rather than short-term wins
• Proof: Achieves 40%+ increases in non-brand conversions
• Positioning: Strong consultative and strategic partner

21. Merkle

Location: Maryland, USA (Global network)

Merkle is a global data-driven performance marketing agency and part of Dentsu. It specializes in CRM, data analytics, and customer experience management. The agency works with large enterprise clients across industries. Merkle focuses on first-party data and personalization. It operates across multiple countries with a strong global presence.

• Focus: Enterprise brands requiring advanced data-driven marketing solutions
• Strength: CRM integration and first-party data utilization
• Approach: Delivers personalized experiences at scale across channels
• Proof: Drives performance through advanced data segmentation
• Backed By: Part of Dentsu’s global network

22. FoxyMoron (Zoo Media)

Location: Mumbai, India

FoxyMoron is a digital marketing agency under Zoo Media, focusing on creative and performance marketing. It works with lifestyle, youth, and consumer brands. The agency emphasizes content-led campaigns and influencer collaborations. It has built a strong presence in India’s digital marketing space. FoxyMoron integrates storytelling with performance metrics.

• Focus: Youth-focused and lifestyle brands
• Strength: Creator-led and content-first marketing strategies
• Approach: Produces native content that blends entertainment with conversion
• Proof: High engagement campaigns translating directly into sales
• Edge: Strong influencer and creator ecosystem integration

23. WATConsult

Location: Mumbai, India

WATConsult is a full-service digital agency and part of the Dentsu network. It provides services across social media, performance marketing, and digital strategy. The agency works with brands across industries such as automotive, BFSI, and FMCG. It focuses on integrating creativity with measurable outcomes. WATConsult has received multiple industry awards.

• Focus: Brands across multiple industries, including automotive, healthcare, and FMCG
• Strength: Integrated full-funnel marketing approach
• Approach: Combines creative storytelling with measurable performance metrics
• Proof: Strong results in retention, remarketing, and customer lifetime value
• Recognition: Known as a leading integrated digital agency

24. Performics

Location: Chicago, USA (Global presence)

Performics is the performance marketing division of Publicis Groupe. It operates globally and specializes in search, social, and performance media. The agency focuses on intent-based marketing strategies. Performics works with large enterprise clients across markets. It emphasizes data-driven decision-making at scale.

• Focus: Global enterprise brands across multiple markets
• Strength: Intent-based marketing using deep audience insights
• Approach: Aligns campaigns with user intent across search, social, and display
• Proof: Delivers consistent omnichannel performance improvements
• Scale: Operates in more than 50 countries worldwide

25. Madison Digital

Location: Mumbai, India

Madison Digital is part of the Madison World group and focuses on digital media and performance marketing. It works with Indian brands across sectors such as retail and FMCG. The agency emphasizes ROI-driven planning and execution. It combines traditional media expertise with digital capabilities. Madison Digital is known for its practical approach.

• Focus: Indian brands and consumer businesses
• Strength: ROI-driven media planning and execution
• Approach: Uses weekly optimization cycles for continuous improvement
• Proof: Maintains controlled CAC while scaling campaigns
• Style: Known for practical and transparent execution

26. Growth Hacker Digital

Location: India

Growth Hacker Digital is a performance marketing agency focused on startups and technology companies. It provides services across SEO, paid marketing, and analytics. The agency emphasizes measurable ROI and data-driven decision-making. It works with brands across industries, including e-commerce and finance. Growth Hacker Digital integrates AI with marketing strategies.

• Focus: Startups and tech-driven companies
• Strength: Data-driven growth strategies enhanced with AI
• Approach: Tracks the entire user journey across touchpoints
• Proof: Achieves traffic growth and significant reductions in CPL
• Model: Combines human expertise with machine optimization

27. Kreative Machinez

Location: Kolkata, India

Kreative Machinez is a digital marketing agency specializing in SEO and PPC services. It has over a decade of experience working with local and international clients. The agency focuses on transparent reporting and technical SEO. It serves small to mid-sized businesses across industries. Kreative Machinez emphasizes long-term growth strategies.

• Focus: SEO and PPC services for SMBs and global clients
• Strength: Transparent reporting and technical SEO expertise
• Approach: Builds strong organic foundations to support paid campaigns
• Proof: Successfully served 180+ clients worldwide
• Experience: Over a decade of industry experience

28. Oxedent

Location: India

Oxedent is a performance marketing agency focused on Google Ads and PPC campaigns. It works primarily with e-commerce businesses. The agency emphasizes account restructuring and optimization. It aims to improve the efficiency and profitability of ad campaigns. Oxedent operates as a specialized performance-focused team.

• Focus: E-commerce brands focusing on Google Ads performance
• Strength: Account restructuring and optimization expertise
• Approach: Identifies inefficiencies before scaling campaigns
• Proof: Delivers 3X to 5X improvements in ad performance
• Style: Highly specialized performance marketing team

29. Growth.cx

Location: India (Remote-first)

Growth.cx is a growth marketing agency focused on B2B SaaS and technology companies. It operates as a remote-first team. The agency specializes in building predictable revenue pipelines. It works closely with startups and scaling companies. Growth.cx emphasizes strategy and execution aligned with business goals.

• Focus: B2B SaaS and technology companies
• Strength: Pipeline-focused marketing and revenue generation
• Approach: Builds predictable systems for lead generation and conversion
• Proof: Generates high-quality leads that convert into revenue
• Model: Operates as a fractional growth team

30. Spray Marketing

Location: Brooklyn, New York, USA

Spray Marketing is a performance marketing agency founded by experienced marketers. It focuses on custom growth strategies rather than standardized agency models. The agency works with SMBs and e-commerce brands. It emphasizes hands-on execution and measurable results. Spray positions itself as an alternative to traditional agencies.

• Focus: SMBs and e-commerce brands looking for agile growth
• Strength: Senior-level execution with customized growth teams
• Approach: Builds tailored strategies for each client rather than templates
• Proof: Achieves up to 57% reduction in CPA and 150% increase in conversions
• Positioning: Known for its “anti-agency” and results-first mindset

Key Takeaways

• Transparency is becoming the defining factor in choosing performance marketing agencies
• Agencies that share real results build stronger trust and close clients faster
• Live dashboards and verified case studies are replacing traditional reports
• Only a small percentage of agencies truly offer full visibility into performance

FAQs

1. What does it mean for an agency to have a "Live Results" portfolio?

It means the agency shares real-time data, verified screenshots, or frequently updated case studies that show actual performance metrics like ROAS, CPA, and revenue growth, rather than just vague "success stories."

2. Why is transparency so important in performance marketing?

Since performance marketing is based on specific actions (clicks, sales, leads), transparency ensures that the agency is actually driving those results efficiently and not just inflating vanity metrics like "impressions."

3. Do these agencies work with small budgets?

Some boutique shops like F22 Labs or Oxedent are more accessible to smaller brands, while global giants like Merkle and Tinuiti typically require six or seven-figure monthly spends.

4. How often should a performance agency update my results?

The best agencies provide 24/7 access to live dashboards, supplemented by weekly deep-dive reports and monthly strategic reviews to ensure the campaigns are always aligned with your business goals.

5. Can I see the actual ad creative in these portfolios?

Yes, many of the top-tier agencies like MuteSix and KlientBoost include the actual video and image assets in their case studies so you can see the "Magic" behind the "Logic."

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