Scalelist

Verified emails and phones, anywhere.

APICapable readiness

About

What is Scalelist

Scalelist finds and verifies B2B email addresses and direct-dial mobile numbers by name or company, pulling from a global dataset and running each result through a verification layer that claims 99% accuracy. It's built for SDRs, BDRs, GTM engineers, and agencies running outbound at the SMB-to-mid-market level who need contact data they can actually send to. The standout capability is weekly contact monitoring — Scalelist flags job changes on existing records, which keeps CRM data from going stale between campaigns. It connects natively to HubSpot, Salesforce, and Pipedrive, and a free Chrome extension lets reps pull emails directly from LinkedIn profiles. The honest limitation: coverage and accuracy claims are self-reported, and teams with very niche or international TAMs may find hit rates lower than the headline numbers suggest.

Data & Discovery

Capabilities

Key features

Email finder

returns verified work emails by name and domain

Native CRM integration

first-party connectors, no middleware required

Also ships

Chrome extension

Our verdict

Vanderbuild take

Scalelist sits squarely in the email finder and phone data enrichment space — a focused, no-frills tool for SDRs, BDRs, and agencies who need verified contact data without paying for a full sales engagement suite. The API is available, so you can wrap Scalelist into your own enrichment pipeline or MCP layer without much friction — it's a capable building block for agentic outbound workflows, even if MCP-native support hasn't been confirmed. Pricing starts at $19/month on a usage-based credit model, which is accessible for small teams, though the credit caps on lower tiers will push growing teams toward the $99–$199 range faster than expected. The main limitation to flag: there's no sequencing or outreach tooling here — Scalelist is purely a data layer, so you'll need a separate tool to actually run campaigns with what you find.

Mateusz Sekta

Founder, vanderbuild

The wedge

Agentic stack profile

API

REST

Programmatic access available.

REST API — straightforward to call from any agent or workflow tool. Rate limits and auth vary by plan.

API docs →

Agentic readiness

Capable

Solid API access — wraps cleanly for agent use.

Solid REST or SDK access. No MCP server yet, but easy to wrap in custom agent tooling. Most modern SaaS tools land here.

Stack role

Data source · Enricher

Where this tool slots into an agentic pipeline.

Plays the role of Data source + Enricher in an agentic pipeline. Use it to source contacts, companies, and the raw inputs an agent needs to act; add firmographic, technographic, and signal data to a lead row on the fly.

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