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Unlock Growth with Smart Marketing & Automation 

Célula 21 helps Brazilian business owners in the U.S., Canada & Europe grow with digital Marketing, AI Automation, Website Development & Social Media Video Editing

Celula 21 Awards

BEST UNION COMMUNICATION AND MARKETING CAMPAIGN

2022

CNSE AWARD

BEST RELATIONSHIP PROJECT

2023

CNSE AWARD

BEST COMMUNICATION CASE

2024

CNSE AWARD

We help small businesses attract more clients and Grow

At Célula 21, we combine website development, paid traffic strategies, and AI automation to help you attract more clients, streamline communication, and grow sustainably. 

We’re not just service providers
we’re your growth partners. 

escritório|gabinete|agência|posto

+20 anos years of Experiencia in Marketing 

We are an award-winning Brazilian agency specializing in Digital Marketing, serving companies and entrepreneurs remotely in Brazil, the United States and Europe. We have over 20 years of expertise, the power of strategy, creativity and technology, with a focus on results.

+20 years of experience in Marketing 

Website Development for Entrepreneurs 

Mobile-first, SEO-optimized, and conversion-ready. 

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Designed to build trust and turn visitors into leads. 

Negócios on-line

Fast loading times and a clear user journey. 

Work Less. Grow More. Market Smarter. 

Novo serviço de streaming

Data-driven Google, Meta, and LinkedIn ad campaigns. 

Trabalho laptop

Designed to bring qualified traffic that converts. 

Relatório financeiro

Monthly reporting + optimization. 

Paid Ads & Traffic Management 

Design

We capture the personality of your business and materialize it through high-impact branding solutions.

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Logo

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Presentation

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Graphic pieces

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Digital pieces

More Leads. Less Stress. Better Clients

AI + SMS Automation for Business

  • Intelligent bots to handle FAQs, lead capture, appointment setting.
     

  • 24/7 customer service without extra hiring.
     

  • Seamless integration with your business tools.

Web Video Design and Social Media Editing

Transform your brand into a visual experience with short, engaging, personalized videos — optimized for Instagram, TikTok, YouTube Shorts, and Reels. Includes script guidance, editing, transitions, branding, captions, and post-ready formats.

Prédios em São Paulo

Modern Marketing for Modern Entrepreneurs

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Customers who are part of Celula 21's history

Let’s talk about where you are and where you want to go. 
We’ll help you get there with strategy, automation, and marketing that scales. 

No commitment. Real insights. Tailored to your business.

Pessoas que trabalham em Open Office

AQ Section

Do you work with businesses outside the US?
Yes! We work with clients across the US, Canada, and Europe. All services are delivered online.

How soon can I see results?
Web design projects are typically completed within 2–4 weeks. Ad campaigns and automation usually show impact within 30 days.

Is this only for tech-savvy businesses?

Not at all. We handle the tech, while you stay focused on your business.

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INTELLIGENCE IN
COMMUNICATION,
MARKETING, AND AI

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celula21.com.br

© 2025 Célula 21 – Intelligence in Communication, Marketing and AI - Smart marketing starts here.

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