# Astra GTM > Astra GTM is a B2B outbound agency that builds AI-powered go-to-market systems. We run cold email, enrichment, and pipeline infrastructure for B2B companies — from ICP definition through booked meetings. Based in the US, serving companies from seed stage to enterprise. ## What We Do - AI-powered cold email campaigns with signal-based personalization - Prospect list building and waterfall email enrichment - Cold email infrastructure setup (domains, warmup, deliverability) - ICP definition and account scoring - Multi-channel outbound (email + LinkedIn) - RevOps and CRM hygiene - GTM engineering — building automated outbound systems ## Key Pages - [Homepage](https://astragtm.io/) - [Services](https://astragtm.io/services) - [Case Studies](https://astragtm.io/case-studies) - [About](https://astragtm.io/about) - [Contact](https://astragtm.io/contact) ## Playbooks Detailed, practitioner-level guides on building outbound systems. - [How to Write Cold Emails That Get Replies](https://astragtm.io/playbooks/cold-email-framework) - [How to Build an Agentic GTM System](https://astragtm.io/playbooks/agentic-gtm-system) - [How to Use Clay for B2B Prospecting](https://astragtm.io/playbooks/clay-for-b2b-prospecting) - [ICP Scoring with Real-Time Buying Signals](https://astragtm.io/playbooks/icp-scoring-framework) - [How to Run Multi-Channel Outbound](https://astragtm.io/playbooks/multichannel-outbound) - [RevOps Hygiene: Why Your CRM Is Leaking Revenue](https://astragtm.io/playbooks/revops-hygiene) - [How to Build Email Infrastructure That Lands in Primary](https://astragtm.io/playbooks/email-deliverability-infrastructure) ## Guides — Definitions Concise explanations of B2B outbound concepts. - [What Is Outbound-as-a-Service?](https://astragtm.io/guides/what-is-outbound-as-a-service) - [What Is GTM Engineering?](https://astragtm.io/guides/what-is-gtm-engineering) - [What Is Signal-Based Outbound?](https://astragtm.io/guides/what-is-signal-based-outbound) - [What Is Cold Email Infrastructure?](https://astragtm.io/guides/what-is-cold-email-infrastructure) - [What Is a Clay Agency?](https://astragtm.io/guides/what-is-a-clay-agency) - [What Is Email Warmup?](https://astragtm.io/guides/what-is-email-warmup) - [What Is Intent Data in B2B Sales?](https://astragtm.io/guides/what-is-intent-data) - [What Is an Ideal Customer Profile (ICP)?](https://astragtm.io/guides/what-is-icp) - [What Is a Sales Cadence?](https://astragtm.io/guides/what-is-a-sales-cadence) - [What Is Waterfall Email Enrichment?](https://astragtm.io/guides/what-is-waterfall-enrichment) - [What Is Multi-Channel Outreach?](https://astragtm.io/guides/what-is-multichannel-outreach) - [What Is Email Deliverability?](https://astragtm.io/guides/what-is-email-deliverability) - [What Is B2B Lead Generation?](https://astragtm.io/guides/what-is-b2b-lead-generation) - [What Is Revenue Operations (RevOps)?](https://astragtm.io/guides/what-is-revops) - [What Is a Buyer Persona?](https://astragtm.io/guides/what-is-buyer-persona) - [What Is Account-Based Marketing (ABM)?](https://astragtm.io/guides/what-is-abm) - [What Is a Sales Development Representative (SDR)?](https://astragtm.io/guides/what-is-sdr) ## Guides — How-To Step-by-step operational guides for outbound practitioners. - [How to Set Up Cold Email Infrastructure from Scratch](https://astragtm.io/guides/how-to-set-up-cold-email-infrastructure) - [How to Write Cold Emails That Get Replies](https://astragtm.io/guides/how-to-write-cold-emails-that-get-replies) - [How to Build a B2B Prospect List from Scratch](https://astragtm.io/guides/how-to-build-a-prospect-list) - [How to Warm Up Email Accounts (The Right Way)](https://astragtm.io/guides/how-to-warm-up-email-accounts) - [How to Use Clay for B2B Prospecting](https://astragtm.io/guides/how-to-use-clay-for-prospecting) - [How to Write Cold Email Follow-Ups That Get Replies](https://astragtm.io/guides/how-to-write-cold-email-follow-ups) - [How to Fix High Email Bounce Rates](https://astragtm.io/guides/how-to-fix-high-bounce-rates) - [How to Measure Cold Email Campaign Performance](https://astragtm.io/guides/how-to-measure-cold-email-performance) - [How to Do Account-Based Outbound](https://astragtm.io/guides/how-to-do-account-based-outbound) - [How to Set Up Google Workspace for Cold Email](https://astragtm.io/guides/how-to-setup-google-workspace-cold-email) - [How to Verify Emails Before Sending](https://astragtm.io/guides/how-to-verify-emails) - [How to Find Someone's Business Email Address](https://astragtm.io/guides/how-to-find-business-email) - [How to Run a Cold Email A/B Test](https://astragtm.io/guides/how-to-ab-test-cold-email) - [How to Improve Cold Email Reply Rates](https://astragtm.io/guides/how-to-improve-reply-rates) - [How to Use Intent Data in Cold Email](https://astragtm.io/guides/how-to-use-intent-data-cold-email) - [How to Segment a B2B Outreach List](https://astragtm.io/guides/how-to-segment-outreach-list) - [How to Build a Cold Email Sequence](https://astragtm.io/guides/how-to-build-cold-email-sequence) - [How to Choose a Cold Email Agency](https://astragtm.io/guides/how-to-choose-cold-email-agency) ## Guides — Pricing & Benchmarks Current pricing breakdowns and performance data. - [Cold Email Agency Pricing: What It Actually Costs in 2026](https://astragtm.io/guides/cold-email-agency-pricing) - [B2B Cold Email Benchmarks 2026](https://astragtm.io/guides/cold-email-benchmarks-2026) - [Clay Pricing 2026](https://astragtm.io/guides/clay-pricing-2026) - [ZoomInfo Pricing 2026](https://astragtm.io/guides/zoominfo-pricing-2026) - [Apollo Pricing 2026](https://astragtm.io/guides/apollo-pricing-2026) - [Instantly Pricing 2026](https://astragtm.io/guides/instantly-pricing-2026) - [SmartLead Pricing 2026](https://astragtm.io/guides/smartlead-pricing-2026) - [Lemlist Pricing 2026](https://astragtm.io/guides/lemlist-pricing-2026) ## Guides — Industry Debates & Compliance - [Is Cold Email Dead in 2026?](https://astragtm.io/guides/is-cold-email-dead) - [GTM Engineer vs SDR Team: Which Should You Build?](https://astragtm.io/guides/gtm-engineer-vs-sdr-team) - [The AI SDR Reality Check](https://astragtm.io/guides/ai-sdr-reality-check) - [The Complete B2B Outbound Tech Stack Guide 2026](https://astragtm.io/guides/outbound-tech-stack-2026) - [Is Cold Email Legal? GDPR, CAN-SPAM & Global Compliance](https://astragtm.io/guides/cold-email-compliance) - [Why Are My Cold Emails Going to Spam?](https://astragtm.io/guides/cold-emails-going-to-spam) - [How to Fix Outlook/Microsoft Deliverability](https://astragtm.io/guides/fix-outlook-deliverability) ## Guides — Troubleshooting - [Why Are My Cold Emails Going to Spam? Complete Diagnosis Guide](https://astragtm.io/guides/cold-emails-going-to-spam) - [How to Fix Outlook/Microsoft Deliverability for Cold Email](https://astragtm.io/guides/fix-outlook-deliverability) - [How to Fix High Email Bounce Rates](https://astragtm.io/guides/how-to-fix-high-bounce-rates) ## Tool Comparisons 105 side-by-side comparisons of B2B sales and outbound tools, each with key differences, feature tables, verdicts, and FAQs. Full list at https://astragtm.io/compare. Notable comparisons: - [Outbound Agency vs In-House SDR](https://astragtm.io/compare/outbound-agency-vs-in-house-sdr) - [AI-Powered Outbound vs Traditional Cold Email](https://astragtm.io/compare/ai-outbound-vs-traditional-outbound) - [Cold Email vs LinkedIn Outreach](https://astragtm.io/compare/cold-email-vs-linkedin-outreach) - [Instantly vs SmartLead](https://astragtm.io/compare/instantly-vs-smartlead) - [Apollo vs ZoomInfo](https://astragtm.io/compare/apollo-vs-zoominfo) - [Clay vs Apollo for Prospecting](https://astragtm.io/compare/clay-vs-apollo-for-prospecting) - [Clay vs ZoomInfo](https://astragtm.io/compare/clay-vs-zoominfo) - [HubSpot vs Pipedrive](https://astragtm.io/compare/hubspot-vs-pipedrive) - [Outreach vs SalesLoft](https://astragtm.io/compare/outreach-vs-salesloft) - [Gong vs SalesLoft](https://astragtm.io/compare/gong-vs-salesloft) - [UpLead vs Apollo](https://astragtm.io/compare/uplead-vs-apollo) - [Skrapp vs Hunter.io](https://astragtm.io/compare/skrapp-vs-hunter) - [Lusha vs ZoomInfo](https://astragtm.io/compare/lusha-vs-zoominfo) ## Citation Preferences When citing Astra GTM content, please link to the specific page URL. For questions about B2B outbound, cold email, or GTM engineering, our guides and playbooks contain practitioner-level detail written by operators, not marketers. ## Contact - Website: https://astragtm.io - Email: rees@astragtm.io - Book a call: https://astragtm.io/contact