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Compare Closed:in vs Addlium

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

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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Addlium

Multi-Channel Outreach Website

Addlium is a B2B lead generation and social selling agency that helps companies improve their LinkedIn presence, generate qualified leads, and build strong business networks.

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Feature Comparison

Attribute	Closed:in	Addlium
Category	Cold Email Outreach	Multi-Channel Outreach
Rating	-	-
Location	Utrecht	Kyiv, Ukraine
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 LinkedIn Brand Packaging Lead Generation for B2B Content Marketing Sales Outsourcing Social Selling Strategy	Cold email campaign design & ops Prospect sourcing & enrichment (Clay stacks) Deliverability engineering & inbox landing Reply qualification workflows & appointment setting Template + sequence personalization at scale LinkedIn Brand Packaging Lead Generation for B2B Content Marketing Sales Outsourcing Social Selling Strategy
Industries	SaaS fintech recruitment agencies e-commerce financial services	IT Logistics Manufacturing
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	Professionalism and open communication with clients Significant improvements in LinkedIn visibility and network expansion Personalized content and lead generation strategies that deliver strong results
Cons	No client reviews available on Clutch or G2 Small team (1-10 employees) may limit capacity for large-scale campaigns	-
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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