Clean & Enrich B2B Lead Lists for Clay (with NexGenData)

Clay-compatible workflow. NexGenData is not an official Clay integration — these are public-data Apify actors you can run inside Clay using Clay’s native Apify integration, an HTTP API column, or a simple CSV round-trip.

The problem: Clay enriches faster than it cleans

Most Clay tables start from a messy export — a list pulled from a CRM, a webinar, or a scraped source. It’s full of duplicates, mixed-case names, malformed and role-based emails, and inconsistent company names. If you enrich and sequence that list as-is, you waste Clay credits on junk rows, hurt deliverability, and email the same person twice. Cleaning and verifying before enrichment is the cheapest quality lever you have.

Who this is for

RevOps, growth, and outbound teams running Clay who import raw prospect or account lists and want them deduped, normalized, and deliverability-checked before they spend credits enriching or sequencing.

The Clay workflow

1. Import your raw list into a Clay table (CSV import, or an existing table).
2. Dedupe + normalize with the B2B Lead List Cleaner — merges duplicate rows, normalizes company names and domains, fixes obvious email typos, and MX-checks each domain.
3. Verify deliverability with the Email Verification actor — SMTP + MX checks, disposable detection, role-account flags.
4. Fill the gaps with Company Enrichment — domain → industry, size, HQ, tech stack, generic contact.
5. Route on a verdict column you derive in Clay (deliverable / review / reject) so only clean rows enter enrichment and sequencing.

How to run NexGenData actors inside Clay

Three routes, all working today with your own Apify token:

• Native Apify action (recommended): Clay ships a built-in Apify integration (all plans, bring-your-own token). Add a column → “Run Apify Actor” → pick nexgendata/b2b-lead-list-cleaner → map your email, domain, company columns → run.
• HTTP API column: POST to https://api.apify.com/v2/acts/nexgendata~email-verification-tool/run-sync-get-dataset-items?token=YOUR_TOKEN with the row email in the body, map the response.
• CSV round-trip: run the actor on Apify, export CSV, and re-import into Clay (no Actions, no Data Credits, up to 50k rows).

Sample input (messy)

Sample output (clean + verified)

15 raw rows → 9 unique, verified contacts. Illustrative sample.

Run it on a schedule

Point the actors at a recurring source (a saved Clay view exported nightly, or a standing list) and schedule the Apify runs. New rows get cleaned and verified before your reps ever see them — list hygiene becomes a background job, not a manual chore.

Try it

Run the B2B Lead List Cleaner on Apify →
Run Email Verification → ·
Run Company Enrichment →

More lead-data tools: Lead Generation & Enrichment cluster · Browse all actors by workflow

More Clay workflows

• Find hiring signals for target accounts
• Brand & competitor signal monitoring
• Company & entity research

FAQ

Is NexGenData an official Clay integration? No. These are public-data Apify actors that run inside Clay using Clay’s own native Apify integration, an HTTP API column, or CSV import. You use your own Apify token.

What does it cost? Clay charges 1 Action per row for the Apify/HTTP step; the actor run is pay-per-use on your own Apify account. CSV import costs no Clay credits.

Will it verify catch-all domains? Catch-all domains return “risky/catch-all” rather than a guaranteed inbox — by design, to avoid false positives.