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Compare eSterling Ltd vs Zupo

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

eSterling Ltd

eSterling Ltd

Cold Email Outreach Website

We help you find your next customer. One of Birmingham's longest established creative agencies, passionate about web design and delivering websites that impress and convert. We build lasting relationships and use digital marketing strategies to help you achieve business goals and increase revenue.

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Zupo

Zupo

SEO & Organic Growth Website

Zupo is a specialized SEO consulting agency that builds long-term organic growth strategies for B2B and enterprise clients. They combine deep search engine knowledge with close client collaboration to deliver measurable results, including significant traffic and revenue increases.

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Feature Comparison

Attribute eSterling Ltd Zupo
Category Cold Email Outreach SEO & Organic Growth
Rating
Location Birmingham, England, United Kingdom Anaheim, California, United States
Services
  • Advertising
  • PPC
  • Branding
  • Online Reputation Management
  • Content Marketing
  • Content Strategy
  • Copywriting
  • Storytelling
  • Marketing Automation
  • Email Marketing
  • SEO
  • Link Building
  • Local SEO
  • Mobile SEO
  • Technical SEO
  • Web Development
  • UX Design
  • Web Design
  • Website Maintenance
  • APP Store Optimization
  • Backlink Management
  • International SEO
  • SEO Consulting
  • Search Engine Marketing
  • Wordpress SEO
  • Advertising
  • PPC
  • Branding
  • Online Reputation Management
  • Content Marketing
  • Content Strategy
  • Copywriting
  • Storytelling
  • Marketing Automation
  • Email Marketing
  • SEO
  • Link Building
  • Local SEO
  • Mobile SEO
  • Technical SEO
  • Web Development
  • UX Design
  • Web Design
  • Website Maintenance
  • APP Store Optimization
  • Backlink Management
  • International SEO
  • SEO Consulting
  • Search Engine Marketing
  • Wordpress SEO
Industries
B2B Services Ecommerce Legal Services Manufacturing
B2B Services Fintech IT Legal Services Logistics
Pros
  • Strong focus on building long-term relationships and understanding client business
  • Unique pay-on-publish Digital PR model reduces risk for clients.
  • Deep expertise in technical SEO and content strategy for B2B and enterprise clients.
  • Strong client relationships and responsive communication as noted in multiple testimonials.
Cons
  • Geographic focus is primarily the UK, which may limit appeal for international clients.
  • No transparent pricing tiers or packages listed, making initial budget estimation
  • Small team size (1-9) may limit scalability for very large or multi-channel campaigns.
  • Higher minimum budget ($10,000) may be prohibitive for startups or very small businesses.
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