Check out our open source tools to give Claude Code GTM superpowers→
Built for operators. No signup, no gate.

Free B2B sales & cold email tools

The tools we actually run inside LeadGrow. Check deliverability, detect tech stacks, model pipeline, clean lead lists. All free. All in-browser.

8Free Tools
0Signups Required
100%Browser-Side

The outbound workflow, covered.

These tools aren't random utilities. They're the stages of a working outbound engine.

01Research

Tech stack + offer workshop

02Deliverability

MX + spam + domain health

03Planning

ROI + pipeline calculators

04Data

CSV merge + dedupe

Deliverability

Deliverability

MX Checker

Check MX records for any domain. Detect blocked gateways like Proofpoint and Mimecast before you send.

> hubspot.com
✓ 3 MX records · Google Workspace
Open tool →
Deliverability

Spam Word Checker

Analyze your email copy in real-time. Catch spam trigger words and get replacement suggestions.

> Don't miss out on this exclusive offer!
✓ 2 spam words flagged
Open tool →
Deliverability

Domain Health Check

Audit SPF, DKIM, DMARC, and MX records. Get a health score and actionable recommendations.

> stripe.com
✓ SPF ✓ DKIM ✓ DMARC p=reject · score 94
Open tool →

Research

Research

Tech Stack Detector

Detect 170+ technologies on any website. Find companies using specific tools for targeted outreach.

> notion.so
✓ Next.js, Vercel, Segment, Amplitude
Open tool →
Research

Offer Workshop

Analyze any website and generate targeted offer angles. Find the messaging that resonates.

> stripe.com
✓ 3 stealth offer angles generated
Open tool →

Planning

Planning

Outbound ROI Calculator

Calculate the potential ROI of outbound for your business. Project pipeline and revenue over 6 months.

Open tool →
Planning

Pipeline Calculator

Model your outbound engine with operational inputs. Compare what-if scenarios to find the highest-leverage optimizations.

Open tool →

Data

Data

CSV Merge & Dedupe

Merge multiple CSV files, deduplicate by domain or email, and clean your lead lists.

> 2 CSVs, 4,800 rows
✓ 3,920 unique · 880 dupes removed
Open tool →
OutcomeYou ship outbound on the same instruments we run inside LeadGrow — no gated trials, no scraped emails, no upsell.

Want the full GTM stack?

The free tools are the tip. The full stack is what we run for clients. Custom enrichment, multichannel sequencing, campaign operations.

Book Strategy Call →