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Compare Closed:in vs Stubborn Marketing

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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Winner

Stubborn Marketing

B2B Lead Generation Website

Stubborn Marketing offers a subscription-based marketing agency model with a flat $999/month fee and no contracts. They provide a full suite of services including SEO, advertising, branding, content marketing, and web development, targeting small to enterprise businesses.

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Feature Comparison

Attribute	Closed:in	Stubborn Marketing
Category	Cold Email Outreach	B2B Lead Generation
Rating	-	Winner +4.5 higher
Location	Utrecht	Vereeniging, Gauteng, South Africa
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 Advertising Display Ads Native Advertising PPC Programmatic Advertising Retargeting and Remarketing Video Marketing Branding Brand Strategy Online Reputation Management Content Marketing Content Strategy Content Syndication Copywriting Storytelling Video Production Data Analytics Data Science Data Visualization Machine Learning and AI Marketing Advice Inbound Marketing Lead Generation Market Research Outbound Marketing Marketing Automation Email Marketing Public Relations Corporate Communications Influencer Marketing SEO International SEO Link Building Local SEO Mobile SEO Technical SEO Social Media Marketing Community Management Content Creation Social Media Monitoring Web Development UX Design Web Design Website Maintenance	Cold email campaign design & ops Prospect sourcing & enrichment (Clay stacks) Deliverability engineering & inbox landing Reply qualification workflows & appointment setting Template + sequence personalization at scale Advertising Display Ads Native Advertising PPC Programmatic Advertising Retargeting and Remarketing Video Marketing Branding Brand Strategy Online Reputation Management Content Marketing Content Strategy Content Syndication Copywriting Storytelling Video Production Data Analytics Data Science Data Visualization Machine Learning and AI Marketing Advice Inbound Marketing Lead Generation Market Research Outbound Marketing Marketing Automation Email Marketing Public Relations Corporate Communications Influencer Marketing SEO International SEO Link Building Local SEO Mobile SEO Technical SEO Social Media Marketing Community Management Content Creation Social Media Monitoring Web Development UX Design Web Design Website Maintenance
Industries	SaaS fintech recruitment agencies e-commerce financial services	B2B Services Fashion Retail Media & Entertainment
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	Subscription model aligns agency incentives with client success rather than billable
Cons	No client reviews available on Clutch or G2 Small team (1-10 employees) may limit capacity for large-scale campaigns	Broad service range may mean less specialization in any single area compared to
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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