tools
How 24 LinkedIn Automation Tools Say They Work (and What LinkedIn Says About All of Them)
2026-08-16.8 min read
READ MORE →AI Outbound & GTM Operator
Theo Castellanos
AI Prospecting & Outbound Pipeline
Theo Castellanos covers AI-driven outbound and GTM execution for GTMStack. His work focuses on prospecting infrastructure, LinkedIn and email sequencing, and the tactical decisions that move prospects from cold to qualified without burning the sender domain.
16 Articles
strategy
LinkedIn Outreach Benchmarks 2026: The Funnel Math
2026-05-28.10 min read
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strategy
LinkedIn Outreach Not Working? 7 Fixes That Move the Needle
2026-05-21.8 min read
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strategy
Cold Email vs LinkedIn: Which Wins for B2B in 2026?
2026-05-12.9 min read
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strategy
How to Personalize Cold Email With AI (Without Spamming)
2026-05-11.9 min read
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strategy
Cold Email Benchmarks 2026: Open, Reply, Bounce
2026-05-07.9 min read
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tools
AI SDR Tools Compared: Do They Actually Work?
2026-04-27.10 min read
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strategy
12 B2B Lead Generation Strategies That Work in 2026
2026-04-23.9 min read
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strategy
LinkedIn Lead Generation: The Complete 2026 Guide
2026-04-22.9 min read
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strategy
B2B Cost Per Lead Benchmarks by Channel (2026)
2026-04-21.8 min read
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strategy
How to Book More Sales Meetings With AI
2026-04-20.9 min read
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strategy
AI SDR vs Human SDR: Which Should You Hire in 2026?
2026-04-15.10 min read
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strategy
LinkedIn InMail vs Connection Requests: What Converts?
2026-04-14.10 min read
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strategy
The LinkedIn Follow-Up Sequence That Books Meetings
2026-04-13.10 min read
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strategy
What Is a Good LinkedIn Response Rate in 2026?
2026-04-12.10 min read
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strategy
LinkedIn Outreach for Recruiters (Safely at Scale)
2026-04-11.9 min read
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