Every tool you need for cold outbound
The complete stack for prospecting, enrichment, research, copywriting, sending, and closing. Curated by the team that runs this pipeline every day.
How to read this page: Tools are organised by pipeline stage — from finding prospects to closing deals. Each step builds on the last. You don't need everything, but knowing what each stage requires helps you build a stack that actually works together.
Prospecting & List Building
Find the right people at the right companies
Apollo.io→
Lead database with 275M+ contacts. Built-in enrichment, sequences, and intent signals. The workhorse for outbound list building.
LinkedIn Sales Navigator→
Advanced search filters, saved leads, and InMail. Still the best way to manually prospect and validate decision-makers.
Clay→
Waterfall enrichment across 75+ data providers. Combines prospecting, enrichment, and AI personalisation in one table.
Apify→
Web scraping platform with 1,500+ pre-built scrapers. Google Maps, LinkedIn, websites — if it's on the web, Apify can grab it.
Enrichment & Verification
Get real emails and verify they won't bounce
FullEnrich→
Waterfall enrichment — cascades through 15+ providers to find the best email and phone for each contact. Higher hit rates than any single source.
Hunter.io→
Email finder and verifier. Domain search shows all known emails at a company. Simple, reliable, well-priced.
ZeroBounce→
Email verification with 99% accuracy. Catches invalid, spam-trap, and catch-all addresses before they tank your sender reputation.
Dropcontact→
GDPR-compliant enrichment. Finds and verifies B2B emails without using a database — generates and validates in real time.
Research & Intelligence
Understand your prospects before you write a word
Tavily→
AI-native search API built for agents. Returns structured, relevant results — not ten blue links. Perfect for automated company research.
Crawl4AI→
Open-source web crawler optimised for LLMs. Extracts clean markdown from any webpage. Great for turning prospect websites into research briefs.
FireCrawl→
Structured web scraping as an API. Point it at a URL, get back clean data. Handles JavaScript-heavy sites that basic scrapers miss.
Perplexity→
AI search engine with citations. Quick way to research companies, industries, and trends with sourced answers you can trust.
AI & Copywriting
Generate sequences that sound human, not templated
Claude (Anthropic)→
Best-in-class for long-form reasoning and nuanced writing. Understands context deeply — ideal for personalised email sequences that don't sound like AI.
ChatGPT (OpenAI)→
Versatile AI assistant for brainstorming angles, rewriting copy, and generating variations. Huge plugin ecosystem.
Lavender→
AI email coach that scores your cold emails in real time. Analyses subject lines, personalisation, readability, and mobile formatting.
Email Infrastructure & Sending
Get emails delivered — not buried in spam
Smartlead→
Unlimited mailbox rotation, auto-warmup, and unified inbox. Handles the infrastructure complexity so you can focus on copy and targeting.
Instantly→
Cold email platform with unlimited accounts, warmup, and lead management. Clean UI, solid deliverability, competitive pricing.
Google Workspace→
The foundation. Fresh domains + Google Workspace accounts for sending. Warm them up for 2-3 weeks before you send a single cold email.
Maildoso→
Bulk mailbox provisioning and management. Spin up sending infrastructure at scale without the manual Google Workspace setup.
CRM & Pipeline
Track replies, book meetings, close deals
HubSpot→
Free CRM with best-in-class integrations. Pipeline management, deal tracking, and reporting. The default choice for a reason.
Cal.com→
Open-source scheduling that embeds anywhere. Round-robin, collective booking, and custom availability. Clean alternative to Calendly.
Pipedrive→
Sales-first CRM with visual pipeline. Simpler than HubSpot, built for outbound teams who want pipeline clarity without the bloat.
Close→
CRM built for cold outreach. Built-in calling, email sequences, and SMS. Popular with SDR teams running high-volume outbound.
Analytics & Tracking
Measure what matters — opens, replies, conversions
or skip the assembly
We run this entire stack for you
Propelr connects every tool on this page into one autonomous pipeline. Research, qualification, personalised sequences, sending, reply handling — all running while you focus on closing.
Book a DemoSee the full pipeline in action — with your ICP, your voice.