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Compare C17 Lab vs Relevance AI

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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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Relevance AI

Cold Email Outreach Website

Relevance AI builds semi-autonomous outbound agents that run thousands of experiments across your total addressable market to find the right wedge. They combine machine-speed hypothesis testing with human taste to generate pipeline for horizontal product companies.

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Feature Comparison

Attribute	C17 Lab	Relevance AI
Category	Cold Email Outreach	Cold Email Outreach
Rating	Winner +5.0 higher	-
Location	San Francisco, California, USA	Limassol, Greece
Services	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 Cold email outreach List building Social selling Community engagement Semi-autonomous outbound agents (Hermes, Kairos, Soteria, Hestia, Persephone) TAM mapping and angle × persona × vertical experimentation Reply handling and voice agent scheduling Statistical analysis and campaign compounding	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 Cold email outreach List building Social selling Community engagement Semi-autonomous outbound agents (Hermes, Kairos, Soteria, Hestia, Persephone) TAM mapping and angle × persona × vertical experimentation Reply handling and voice agent scheduling Statistical analysis and campaign compounding
Industries	SaaS E-commerce VC-backed startups Professional Services Manufacturing & Distribution B2B SaaS for Traditional Industries	Devtools & infrastructure AI platforms Workflow software Horizontal B2B SaaS
Pros	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	Campaigns compound over time via a shared memory graph Reply and voice agents handle objections and book meetings automatically
Cons	-	No client reviews available on Clutch or G2 yet Requires human oversight for taste and final approval Best suited for horizontal products with large experiment surfaces
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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