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Compare Full Cortex vs Kelp

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

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Full Cortex

Full Cortex

B2B Lead Generation Website

Full Cortex is a Boston-based growth agency specializing in full-funnel growth marketing for B2B, SaaS, and tech-driven companies. They help acquire more customers, increase conversion rates, and scale revenue with measurable results across both digital platforms and mobile apps.

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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 Full Cortex Kelp
Category B2B Lead Generation Cold Email Outreach
Rating
Winner +0.1 higher
Location Boston, Massachusetts Brooksville, Florida
Services
  • AI Search Optimization
  • LLM optimization
  • Advertising
  • Display Ads
  • Native Advertising
  • PPC
  • Programmatic Advertising
  • Retargeting and Remarketing
  • Video Marketing
  • Branding
  • Brand Strategy
  • Content Marketing
  • Content Strategy
  • Copywriting
  • Storytelling
  • Data Analytics
  • Data Science
  • Machine Learning and AI
  • Marketing Advice
  • Inbound Marketing
  • Lead Generation
  • Market Research
  • Outbound Marketing
  • Marketing Automation
  • Email Marketing
  • SEO
  • International SEO
  • Link Building
  • Local SEO
  • Mobile SEO
  • Technical SEO
  • Social Media Marketing
  • Community Management
  • Content Creation
  • Social Media Monitoring
  • Web Development
  • Digital Design
  • Product Design
  • UX Design
  • Web Design
  • Website Maintenance
  • Wordpress Design
  • Online Reputation Management
  • Shopify SEO
  • Wordpress SEO
  • Graphic Design
  • Logo Design
  • AI Search Optimization
  • LLM optimization
  • Advertising
  • Display Ads
  • Native Advertising
  • PPC
  • Programmatic Advertising
  • Retargeting and Remarketing
  • Video Marketing
  • Branding
  • Brand Strategy
  • Content Marketing
  • Content Strategy
  • Copywriting
  • Storytelling
  • Data Analytics
  • Data Science
  • Machine Learning and AI
  • Marketing Advice
  • Inbound Marketing
  • Lead Generation
  • Market Research
  • Outbound Marketing
  • Marketing Automation
  • Email Marketing
  • SEO
  • International SEO
  • Link Building
  • Local SEO
  • Mobile SEO
  • Technical SEO
  • Social Media Marketing
  • Community Management
  • Content Creation
  • Social Media Monitoring
  • Web Development
  • Digital Design
  • Product Design
  • UX Design
  • Web Design
  • Website Maintenance
  • Wordpress Design
  • Online Reputation Management
  • Shopify SEO
  • Wordpress SEO
  • Graphic Design
  • Logo Design
Industries
B2B Services Healthcare & Hospital IT
Architecture B2B Services Ecommerce Media & Entertainment Real Estate
Pros
  • Collaborative team that integrates with sales, customer success, and product
  • 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
  • No client reviews or testimonials publicly available on Semrush profile
  • Pricing range ($2,500-$5,000) may be low for comprehensive full-funnel strategies,
  • 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
Website Visit Site Visit Site

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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