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Compare Passion Digital vs Kelp

Side-by-side comparison of features, pricing, services, ratings and more.

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Passion Digital

Passion Digital

SEO & Organic Growth Website

Passion Digital is a search-led performance marketing agency that blends data-driven strategy with creative thinking. They help growth brands maximise ROI across SEO, PPC, paid social, content marketing, and AI-driven search.

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Kelp

Kelp

Cold Email Outreach Website

Kelp is a small, senior-led creative agency focused on building websites and digital systems that perform, scale, and remain maintainable long after launch. They partner with organizations that value clarity, technical precision, and long-term thinking.

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Feature Comparison

Attribute Passion Digital Kelp
Category SEO & Organic Growth Cold Email Outreach
Rating
Winner +0.1 higher
Location London, England, United Kingdom Brooksville, Florida
Services
  • AI Search Optimization
  • LLM optimization
  • Advertising
  • Display Ads
  • PPC
  • Programmatic Advertising
  • SEO
  • SEO Consulting
  • Search Engine Marketing
  • Branding
  • Brand Strategy
  • Online Reputation Management
  • Marketing Automation
  • Email Marketing
  • Local SEO
  • Mobile SEO
  • Shopify SEO
  • Technical SEO
  • Wordpress SEO
  • Web Development
  • Digital Design
  • Graphic Design
  • Logo Design
  • Product Design
  • UX Design
  • Web Design
  • Website Maintenance
  • Wordpress Design
  • AI Search Optimization
  • LLM optimization
  • Advertising
  • Display Ads
  • PPC
  • Programmatic Advertising
  • SEO
  • SEO Consulting
  • Search Engine Marketing
  • Branding
  • Brand Strategy
  • Online Reputation Management
  • Marketing Automation
  • Email Marketing
  • Local SEO
  • Mobile SEO
  • Shopify SEO
  • Technical SEO
  • Wordpress SEO
  • Web Development
  • Digital Design
  • Graphic Design
  • Logo Design
  • Product Design
  • UX Design
  • Web Design
  • Website Maintenance
  • Wordpress Design
Industries
B2B Services Fintech Real Estate
Architecture B2B Services Ecommerce Media & Entertainment Real Estate
Pros
  • Full-funnel performance marketing approach that connects SEO, PPC, paid social,
  • Senior-led team with no junior layer ensures high-quality execution and accountability.
  • Strategy-first approach focusing on structure and user flow before visual design.
  • Specializes in WordPress and HubSpot CMS for scalable, marketer-friendly systems.
  • Deliberately small team allows tight communication and faster decision-making.
Cons
  • Geographic focus is primarily UK and US, with limited presence in other regions.
  • Small team size (1-9) may limit capacity for large-scale or simultaneous projects.
  • No mention of paid media or PPC services, which may be a gap for full-funnel marketing
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Free Plan Available

You shouldn’t have to overpay for cold email tools. With Mystrika, you won’t.

It does cold email warmup, sequences, unified inbox, and AI writing - all in one place. Every other tool that does this charges somewhere between $100 and $500 a month. Mystrika has a free plan. 500 prospects. No expiry. No card.

The people who consistently book meetings from cold email aren’t smarter. They just stopped leaving money on the table.

See the Free Plan