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Compare Closed:in vs The SEO Works

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

Closed:in

Closed:in

Cold Email Outreach Website

Closed:in is a cold-email specialist and Clay/Instantly partner building hyper-personalized outbound systems that book meetings and generate pipeline. They use Clay-powered outbound campaigns for B2B service companies to deliver sales calls within 2-3 weeks.

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Winner
The SEO Works

The SEO Works

B2B Lead Generation Website

The SEO Works is a digital marketing agency specialising in SEO, PPC, and performance-led search marketing. Founded in 2009, they work with businesses internationally from SMEs to enterprise brands, with specialist capability in AI-led search and answer engine optimisation.

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Feature Comparison

Attribute Closed:in The SEO Works
Category Cold Email Outreach B2B Lead Generation
Rating -
Winner +4.5 higher
Location Utrecht Sheffield, England, United Kingdom
Services
  • Cold email campaign design & ops
  • Prospect sourcing & enrichment (Clay stacks)
  • Deliverability engineering & inbox landing
  • Reply qualification workflows & appointment setting
  • Template + sequence personalization at scale
  • AI Search Optimization
  • LLM optimization
  • Advertising
  • Display Ads
  • PPC
  • Programmatic Advertising
  • Retargeting and Remarketing
  • Amazon Marketing
  • Amazon Advertising
  • Amazon SEO
  • Content Marketing
  • Content Strategy
  • Content Syndication
  • Copywriting
  • Data Analytics
  • Machine Learning and AI
  • Marketing Advice
  • Inbound Marketing
  • Lead Generation
  • SEO
  • Backlink Management
  • International SEO
  • Link Building
  • Local SEO
  • Mobile SEO
  • SEO Consulting
  • Search Engine Marketing
  • Shopify SEO
  • Technical SEO
  • Wordpress SEO
  • Youtube SEO
  • Social Media Marketing
  • Content Creation
  • Facebook Advertising
  • Instagram Marketing
  • Web Development
  • Digital Design
  • Graphic Design
  • Logo Design
  • UX Design
  • Web Design
  • Website Maintenance
  • Wordpress Design
  • Cold email campaign design & ops
  • Prospect sourcing & enrichment (Clay stacks)
  • Deliverability engineering & inbox landing
  • Reply qualification workflows & appointment setting
  • Template + sequence personalization at scale
  • AI Search Optimization
  • LLM optimization
  • Advertising
  • Display Ads
  • PPC
  • Programmatic Advertising
  • Retargeting and Remarketing
  • Amazon Marketing
  • Amazon Advertising
  • Amazon SEO
  • Content Marketing
  • Content Strategy
  • Content Syndication
  • Copywriting
  • Data Analytics
  • Machine Learning and AI
  • Marketing Advice
  • Inbound Marketing
  • Lead Generation
  • SEO
  • Backlink Management
  • International SEO
  • Link Building
  • Local SEO
  • Mobile SEO
  • SEO Consulting
  • Search Engine Marketing
  • Shopify SEO
  • Technical SEO
  • Wordpress SEO
  • Youtube SEO
  • Social Media Marketing
  • Content Creation
  • Facebook Advertising
  • Instagram Marketing
  • Web Development
  • Digital Design
  • Graphic Design
  • Logo Design
  • UX Design
  • Web Design
  • Website Maintenance
  • Wordpress Design
Industries
SaaS fintech recruitment agencies e-commerce financial services
B2B Services Education Institutions Fintech Healthcare & Hospital Legal Services
Pros
  • High reply rates on top campaigns (claimed 50%+)
  • Quick pipeline generation (e.g., $190K in 60 days)
  • Official Clay Solutions Partner and Certified Instantly Expert
  • End-to-end automation using Clay and Instantly
  • Trusted by 50+ B2B companies
  • Strong client satisfaction with a 4.7 rating and numerous success stories showing
Cons
  • No client reviews available on Clutch or G2
  • Small team (1-10 employees) may limit capacity for large-scale campaigns
  • Pricing is not publicly disclosed, which may be a barrier for budget-conscious buyers.
  • Primarily UK-based with limited local presence in other regions, though they serve
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