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Compare ESA Digital Ltd. vs Zelst

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

ESA Digital Ltd.

SEO & Organic Growth Website

Award-winning SEO & GEO agency for growing SaaS and Tech companies. Since 2020, their team of Google Trainers has scaled 60+ brands 6-10X across the US, UK, and Europe.

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Zelst

Cold Email Outreach Website

Zelst is a highly experienced search marketing agency that helps clients to be seen and get found online. They achieve substantial return on marketing investment through creative and strategic search marketing.

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Feature Comparison

Attribute	ESA Digital Ltd.	Zelst
Category	SEO & Organic Growth	Cold Email Outreach
Rating
Location	London, England, United Kingdom	Harrogate, England, United Kingdom
Services	AI Search Optimization LLM optimization SEO Backlink Management International SEO Link Building SEO Consulting Technical SEO PPC Content Marketing Social Media Marketing Email Marketing Data Analytics Marketing Automation	AI Search Optimization LLM optimization SEO Backlink Management International SEO Link Building SEO Consulting Technical SEO PPC Content Marketing Social Media Marketing Email Marketing Data Analytics Marketing Automation
Industries	B2B Services	B2B Services Ecommerce Fashion Retail Food & Beverages Health & Wellness
Pros	High client satisfaction with 4.9 average review rating and consistent positive	Transparent, consultative approach with a focus on metrics that matter to the client.
Cons	Small team (10-49) may limit capacity for very large enterprise engagements. Niche focus on SaaS, apps, and tech companies - not ideal for non-tech industries. Starting budget of $5,000 may be high for early-stage startups.	Primary geographic focus on UK and US, less suited for companies targeting other
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

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