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Compare Sellwise vs Concept21

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

Sellwise Agency logo

Sellwise

Account-Based Marketing Website
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Concept21 Agency logo

Concept21

Branding & Design Website

Concept21 is a full-spectrum digital agency based in Wroclaw, Poland, founded in 2015. The team of 50-99 employees has completed over 1,500 projects across web design, development, eCommerce, SEO, branding, and digital strategy.

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Feature Comparison

Attribute Sellwise Concept21
Category Account-Based Marketing Branding & Design
Rating
Location Gliwice, Poland Wroclaw, Poland
Services
  • Programmable Automation
  • Content Creation
  • CRM Implementation
  • CRM Migration
  • Custom API Integrations
  • Customer Success Training
  • Customer Support Training
  • Email Marketing
  • Full Inbound Marketing Services
  • Paid Advertising
  • Sales and Marketing Alignment
  • Sales Coaching and Training
  • Sales Enablement
  • Social Media
  • Video Production
  • Website Design
  • Website Development
  • Website Migration
  • Account based marketing
  • Web Design
  • Web Development
  • SEO
  • eCommerce Development
  • CRO
  • Design Services
  • Mobile App Development
  • Digital Strategy
  • Branding
  • UI/UX Design
  • Programmable Automation
  • Content Creation
  • CRM Implementation
  • CRM Migration
  • Custom API Integrations
  • Customer Success Training
  • Customer Support Training
  • Email Marketing
  • Full Inbound Marketing Services
  • Paid Advertising
  • Sales and Marketing Alignment
  • Sales Coaching and Training
  • Sales Enablement
  • Social Media
  • Video Production
  • Website Design
  • Website Development
  • Website Migration
  • Account based marketing
  • Web Design
  • Web Development
  • SEO
  • eCommerce Development
  • CRO
  • Design Services
  • Mobile App Development
  • Digital Strategy
  • Branding
  • UI/UX Design
Industries
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Construction Consumer Goods Corporate Services Fintech Food and Beverage Hospitality Insurance Design Fashion eCommerce
Pros
  • Holds certifications across Marketing Hub, Sales Hub, Service Hub, and Content Hub
  • Offers a free initial consultation for CRM implementation
  • Google reviewers praise clear communication, responsiveness, and reliability.
  • Co-founders bring 15+ and 14+ years of experience in eCommerce, marketplace technology, Java, and financial systems.
  • Client list includes Allianz, Walmart, IKEA, Visa, Hilton, and Accor.
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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