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Compare Fullsix Portugal vs Relevance AI

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Fullsix Portugal

B2B Lead Generation Website

Fullsix Portugal is a leading digital agency with nearly 20 years of experience, specializing in customer experience, strategy, creativity, and technology. With over 150 professionals, they offer a full range of services from strategic planning to advertising, SEO, UX/UI, content, social media, platform development, and media planning.

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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	Fullsix Portugal	Relevance AI
Category	B2B Lead Generation	Cold Email Outreach
Rating	Winner +4.5 higher	-
Location	Lisbon, Lisbon, Portugal	Limassol, Greece
Services	Advertising Display Ads PPC Video Marketing Content Marketing Content Strategy Copywriting Storytelling Data Analytics Data Science Marketing Advice Lead Generation Marketing Automation Email Marketing SEO International SEO Link Building Local SEO Mobile SEO Technical SEO Web Development UX Design Web Design Website Maintenance 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	Advertising Display Ads PPC Video Marketing Content Marketing Content Strategy Copywriting Storytelling Data Analytics Data Science Marketing Advice Lead Generation Marketing Automation Email Marketing SEO International SEO Link Building Local SEO Mobile SEO Technical SEO Web Development UX Design Web Design Website Maintenance 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	Automotive Fintech Real Estate Transportation Travel & Tourism	Devtools & infrastructure AI platforms Workflow software Horizontal B2B SaaS
Pros	Co-founder of the Havas CX network, indicating deep expertise in customer experience	Campaigns compound over time via a shared memory graph Reply and voice agents handle objections and book meetings automatically
Cons	Geographic focus is primarily Portugal, limiting appeal for companies needing global	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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