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Compare R3.inc vs Kelp

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

R3.inc

R3.inc

SEO & Organic Growth Website

R3.inc is a Japanese digital marketing agency specializing in integrated advertising, SEO/SXO, and analytics. Founded in 2001, they combine AI-driven ad optimization with search experience optimization to deliver measurable results for small to mid-sized businesses.

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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 R3.inc Kelp
Category SEO & Organic Growth Cold Email Outreach
Rating
Location Osaka, Osaka, Japan Brooksville, Florida
Services
  • Advertising
  • PPC
  • Retargeting and Remarketing
  • Video Marketing
  • Data Analytics
  • Data Science
  • Data Visualization
  • Marketing Advice
  • Inbound Marketing
  • Market Research
  • SEO
  • Local SEO
  • SEO Consulting
  • Social Media Marketing
  • Facebook Advertising
  • Instagram Marketing
  • Web Development
  • Web Design
  • Wordpress Design
  • Branding
  • Brand Strategy
  • Online Reputation Management
  • Marketing Automation
  • Email Marketing
  • Mobile SEO
  • Shopify SEO
  • Technical SEO
  • Wordpress SEO
  • Digital Design
  • Graphic Design
  • Logo Design
  • Product Design
  • UX Design
  • Website Maintenance
  • Advertising
  • PPC
  • Retargeting and Remarketing
  • Video Marketing
  • Data Analytics
  • Data Science
  • Data Visualization
  • Marketing Advice
  • Inbound Marketing
  • Market Research
  • SEO
  • Local SEO
  • SEO Consulting
  • Social Media Marketing
  • Facebook Advertising
  • Instagram Marketing
  • Web Development
  • Web Design
  • Wordpress Design
  • Branding
  • Brand Strategy
  • Online Reputation Management
  • Marketing Automation
  • Email Marketing
  • Mobile SEO
  • Shopify SEO
  • Technical SEO
  • Wordpress SEO
  • Digital Design
  • Graphic Design
  • Logo Design
  • Product Design
  • UX Design
  • Website Maintenance
Industries
B2B Services Healthcare & Hospital Manufacturing Real Estate Travel & Tourism
Architecture B2B Services Ecommerce Media & Entertainment Real Estate
Pros
  • Long-established agency with over 20 years of digital marketing experience
  • Google Partner and GAIQ certified team ensures expertise in Google Ads and Analytics
  • Combines advertising and SEO/SXO for a fully integrated digital strategy
  • Uses AI and machine learning to optimize ad performance and search experience
  • 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
  • Small team (1-9) may limit capacity for large-scale or multi-market campaigns
  • Primarily focused on the Japanese market, not ideal for global or multilingual initiatives
  • 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
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