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Compare Zelst vs C17 Lab

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

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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Winner

C17 Lab

Cold Email Outreach Website

C17 Lab is a B2B outbound growth agency that builds and scales automated sales engines using AI-powered workflows, cold email, and multi-channel outreach to generate qualified meetings and pipeline.

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Feature Comparison

Attribute	Zelst	C17 Lab
Category	Cold Email Outreach	Cold Email Outreach
Rating		Winner +0.5 higher
Location	Harrogate, England, United Kingdom	San Francisco, California, USA
Services	SEO PPC Content Marketing Social Media Marketing Email Marketing Data Analytics Marketing Automation AI-powered outbound sales systems Cold email campaigns and automation LinkedIn and multi-channel outreach Email infrastructure and deliverability setup Data-driven campaign optimization Outbound lead generation Inbound lead conversion RevOps and sales enablement	SEO PPC Content Marketing Social Media Marketing Email Marketing Data Analytics Marketing Automation AI-powered outbound sales systems Cold email campaigns and automation LinkedIn and multi-channel outreach Email infrastructure and deliverability setup Data-driven campaign optimization Outbound lead generation Inbound lead conversion RevOps and sales enablement
Industries	B2B Services Ecommerce Fashion Retail Food & Beverages Health & Wellness	SaaS E-commerce VC-backed startups Professional Services Manufacturing & Distribution B2B SaaS for Traditional Industries
Pros	Transparent, consultative approach with a focus on metrics that matter to the client.	Fast lead generation with high-quality, ICP-aligned prospects Tailored AI-powered campaigns that feel 1:1 Strong email deliverability and infrastructure setup Proven track record with case studies showing 400+ meetings in 90 days
Cons	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.

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