Tools

The Cold Outreach Stack We Actually Use

A curated, opinionated list of the tools we plug into client outbound systems every week — sending platforms, finders, verifiers, warmup, CRMs and signal layers.

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Our spreadsheet tools

SheetKit

Remove duplicate rows, merge values and change case in Google Sheets. Free tools by ProLeadMaker Tools; public Marketplace installation is being prepared.

Explore SheetKit

Sending Platforms

4 picks

Instantly

Referral

High-volume cold email sender with built-in warmup and unibox.

Best for agencies running multi-domain sends.

Smartlead

AI-powered cold email and reply handling at scale.

Great when you need flexible API and multi-channel.

Apollo

Database + sending + sequencing in one stack.

Ideal for early-stage teams building lists fast.

Lemlist

Personalised cold email with images and videos.

Best when hyper-personalisation matters most.

Email Finders

4 picks

Apollo

B2B contact database with verified emails and direct dials.

Strong default for US/EU B2B sourcing.

Hunter

Domain-based email lookup with confidence scoring.

Great for finding emails by company domain.

Snov.io

Email finder, verifier and drip sender combo.

Useful for budget-conscious lean teams.

RocketReach

Multi-source professional contact database.

When you need direct dials and personal emails.

Email Verification

4 picks

MillionVerifier

Bulk email verification with risk classifications.

Go-to for cleaning large list dumps.

NeverBounce

Real-time and bulk email verification.

Best for API-integrated verification workflows.

ZeroBounce

Verification + scoring + catch-all detection.

Solid all-rounder with strong catch-all logic.

Bouncer

GDPR-friendly email verification with team workflows.

Great for EU clients who care about compliance.

Email Warmup

4 picks

Mailreach

Reputation warmup with peer-to-peer network.

Stable warmup for new domains.

Warmup Inbox

Automated inbox warming with reporting.

Great for monitoring sender reputation.

Smartlead Warmup

Built-in warmup tied to sending campaigns.

Useful if Smartlead is your sender.

Instantly Warmup

Referral

Free warmup included with Instantly accounts.

Default warmup for Instantly users.

CRMs

4 picks

HubSpot

Free tier CRM with full sales pipeline.

Best free CRM for early-stage teams.

Pipedrive

Sales-focused CRM with strong pipeline view.

Great for outbound sales teams.

Close

Inside-sales CRM with built-in calling.

Ideal for SDR-driven sales motions.

Salesforce

Enterprise-grade CRM with deep customisation.

For larger orgs with complex pipelines.

Intent & Signals

4 picks

Clay

Programmable data enrichment and outbound automation.

Powerful for building custom signal workflows.

Common Room

Signal-based selling across community and product data.

Strong for PLG and community-led teams.

Trigify

Buying signal aggregator for B2B sellers.

Surfaces signals like job changes and tech adoption.

LinkedIn Sales Navigator

Advanced LinkedIn search and filtering.

Foundation for LinkedIn-based prospecting.

Free mini-tool

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