Lead List QA

Preview the mess. Unlock the defensible handoff.

Paste or upload a lead CSV to see format problems, risky patterns, weak domains, and duplicates before you hand it to a client or team. Preview up to 5,000 rows free. If the batch needs work, pay once for a handoff CSV, readable report, and strict import files.

Price

£29 / £49 GBP

One exact-batch handoff bundle. £29 up to 1,000 rows, £49 up to 5,000 rows.

Payment

Hosted by Stripe

Card details stay inside Stripe Checkout, not this app.

Output

Instant bundle release

The client-ready CSV, strict HubSpot and Apollo import packs, rejects files, and handoff report unlock only after the paid session is verified server-side.

One-off payment Exact batch only No subscription Hosted Stripe checkout No account required

Interactive Tool

Run the live version-1 preview in the browser.

Run the same preview flow a buyer would use, then unlock the exact batch only if the visible damage justifies the payment. Version 1 previews and unlocks one exact-batch handoff bundle up to 5,000 rows.

Input CSV

Paste a lead list or load a UTF-8 CSV file to see what would make a buyer hesitate before delivery. The live preview accepts comma, semicolon, and tab-separated exports up to 5,000 rows in version 1.

Your CSV is sent to ListSift for the preview. Email status is based on file rules, not a live mailbox check. Read how your CSV is handled.

No file chosen

Version 1 rules

  • Sample CSV loads automatically so the tool is usable on first visit.
  • Comma, semicolon, and tab-separated exports are detected automatically.
  • The free preview shows full-batch counts plus a flagged-row sample before checkout.
  • The paid handoff bundle adds the client-ready CSV, handoff report, batch grade, normalized next steps, confidence scores, row priority, handoff notes, domain-source context, and duplicate groups.
  • The strict import packs are narrower than the handoff file and include only rows passing ListSift's direct-import rules. Check the target system's requirements before import.
  • This version is a one-off handoff flow for the exact CSV you inspect here, up to 5,000 rows.

Preview Result

The preview should make the quality gap obvious enough that the paid handoff bundle feels like an execution-ready operator pack, not speculative analysis.

Run a preview first.

Flagged rows
Row Email Domain Status Issues Action
Run a preview to inspect flagged rows.

The preview intentionally shows only a slice of flagged rows. The paid handoff bundle turns the full batch into row-by-row keep, remove, dedupe, replace-contact, or verify-domain instructions with confidence, reasons, priority, handoff notes, duplicate context, and the included report and stricter import packs.

Free sample includes up to 3 example rows with batch grade, next step, and handoff note. The full paid handoff remains locked.

What Unlocks

The paid release gives you one broad handoff file and two stricter import packs.

Client-ready handoff

Use when a person still needs to review the batch.

The full handoff CSV keeps keep, review, and remove decisions visible so the next operator or client can understand what changed.

Strict import packs

Use when a system needs a smaller direct-import subset.

The HubSpot-ready and Apollo-ready files are narrower than the handoff CSV and exclude rows that still need judgment.

Reject files

Use when you need to see what blocked direct import.

Each strict import pack includes its own rejects file so blocked rows do not disappear silently into the main handoff.

Paid Output Sample

What the paid handoff CSV adds.

This example export comes from the same anonymized proof batch shown elsewhere on the page. The paid file turns visible damage into a more defensible handoff CSV with a batch grade, normalized next steps, priority, domain-source context, duplicate sizing, plain-English reasons, and operator notes.

Source fields retained One CSV No account
email_normalized next_step action priority domain_source duplicate_size handoff_note
amira.bennett@northforge.io verify_domain keep low email_derived 1 Domain was derived from the email; verify company match before client handoff.
sales@latticeworks.co.uk dedupe review medium supplied 2 Review duplicate group of 2 rows before sending or importing.
owen@@latticeworks.co.uk remove remove high missing 1 Remove before handoff: invalid email; missing domain.
amira.bennett@northforge.io100

Next step: verify_domain

Action: keep

Priority: low

Why: No issues found.

Note: Domain was derived from the email; verify company match before client handoff.

sales@latticeworks.co.uk65

Next step: dedupe

Action: review

Priority: medium

Why: risky shared or disposable email; duplicate email.

Note: Review duplicate group of 2 rows before sending or importing.

owen@@latticeworks.co.uk10

Next step: remove

Action: remove

Priority: high

Why: invalid email; missing domain.

Note: Remove before handoff: invalid email; missing domain.

Readable by a client

Buyer-friendly reasons make the cleanup defensible without explaining raw issue codes.

Fast to act on

Next-step values, priority, and handoff notes tell the operator what to act on first.

Easy to audit

Stable row hashes, domain-source context, and duplicate group sizes make decisions easier to track.

Handoff Summary

What the buyer can understand in under a minute.

This summary uses the same anonymized proof batch as the preview and export samples. The paid CSV is the operational file; the summary is the fast explanation layer around what was checked and what changed.

Batch scope Priority counts First actions

Example batch summary

  • Rows reviewed: 8
  • Batch grade: Do not send yet
  • Rows flagged: 6
  • Rows needing review: 4
  • Recommended removals: 2

Priority split

  • High priority: 2
  • Medium priority: 4
  • Low priority: 2
  • Rows ready to keep: 2

First actions

  • Row 3: remove - Remove before handoff: invalid email; missing domain.
  • Row 6: remove - Remove before handoff: invalid email.
  • Row 2: review - Review duplicate group of 2 rows before sending or importing.

Not a bulk verifier

ListSift is not trying to be a broad deliverability platform, enrichment suite, or long-term data workspace.

Built for one handoff

The paid result is a review-ready CSV plus a fast explanation layer for the exact batch you inspected, so the next person can trust the file more quickly.

After payment

You return to the success page, the Stripe session is verified, and the exact-batch handoff bundle unlocks immediately: the client-ready CSV, strict HubSpot and Apollo subsets, both rejects files, and the handoff report.

Support route

Support is manual and email-only. If you lose the paid link or a file does not release, email from the checkout address with the approximate payment date and amount. Save the files within seven days.

Before you pay

The preview is the commitment filter. Inspect visible issue counts and flagged rows first, then skip payment if the batch already looks usable.

If paid release fails

The first step is a manual fix or rerun for that exact paid batch. If verified paid files still cannot be released after that check, the batch charge should be refunded.

What the preview is for

Use the free preview to decide whether the visible damage justifies cleanup before a client, SDR, or system inherits the file.

For a repeatable client delivery process, read the lead-list handoff checklist.

What the paid files are for

Use the paid handoff when you want the next person to inherit a batch with clearer row decisions, reasons, duplicate context, and a short summary instead of a raw spreadsheet.