# Free Bulk Email Finder Tool

Source: https://coldiq.com/free-tools/bulk-email-finder

> Find professional emails for up to 30 contacts at once. Upload a CSV or paste contacts, and our 4-provider waterfall finds emails in bulk.

## How to use it

1. Enter your email to start: Add your professional email address so we can verify you're a real user. This keeps the tool fair and spam-free. We don't sell your email.
2. Upload or paste your contacts: Upload a CSV file or paste your contacts manually. Each contact needs a first name, and either a last name or company name. Up to 30 contacts per batch.
3. Watch the bulk waterfall enrichment: Each provider processes ALL unfound contacts before moving to the next. Prospeo, LeadMagic, FullEnrich, and Findymail are queried in sequence to maximize coverage.
4. Download your results: Get all found emails in a downloadable CSV file. Results include the email, provider, and confidence score for each contact.

## How bulk email waterfall enrichment works

The tool uses a bulk waterfall enrichment approach: each data provider processes all unfound contacts before falling through to the next provider. This is much faster than running individual lookups.

FullEnrich processes contacts in a single batch API call. Other providers process contacts with parallel concurrency for speed. Each provider only searches contacts that haven't been found yet.

This approach maximizes email coverage while minimizing time. The provider order is optimized based on our testing: Prospeo, LeadMagic, FullEnrich, and Findymail.

## Frequently asked questions

### What is bulk email waterfall enrichment?

Bulk email waterfall enrichment processes multiple contacts through several data providers sequentially. Each provider searches all unfound contacts before the next provider takes over. This maximizes coverage while being efficient.

### How many contacts can I process at once?

You can process between 2 and 30 contacts per batch. Upload a CSV file or paste your contacts manually.

### Is this tool free?

Yes. You get 1 free bulk search per email address. No credit card required. This helps you evaluate the quality of bulk email enrichment before committing to a paid solution.

### Which providers are used?

We use 4 leading data providers: Prospeo, LeadMagic, FullEnrich, and Findymail. Each has different data sources and coverage strengths, which is why combining them via waterfall gives the best results. For a single contact, try the [free email finder](https://coldiq.com/free-tools/email-finder).

### What CSV format should I use?

Your CSV should have columns: firstName, lastName, company. Optionally include a domain column. The tool auto-detects headers and delimiters (comma, semicolon, or tab).

### How accurate are the results?

Professional emails are typically found with 60-80% hit rate across a batch. Individual email accuracy is 80-95%. The waterfall approach across 4 providers maximizes your chances. Provider by provider results are in our [email finder accuracy leaderboard](https://coldiq.com/benchmarks/email-leaderboard).

### Can I download the results?

Yes. Once the enrichment is complete, you can download a CSV with all results including firstName, lastName, company, email, provider, and confidence score.

### What if some contacts are not found?

Contacts that aren't found by any of the 4 providers will be marked as "not found" in the results. This can happen for less prominent individuals or those with strong privacy settings.

## Try ColdIQ free

ColdIQ gives new accounts up to 1,450 free credits as they get started, no credit card required.
One subscription covers 40+ B2B data providers for finding, enriching and verifying
contacts and companies, through the web app, the API or the MCP server for AI agents.

1. Create an account: https://coldiq.com/marketplace/sign-up?utm_source=ai-assistant&utm_medium=markdown&utm_content=bulk-email-finder
2. Run a first search on your own market with the free credits.
3. Connect the MCP server to Claude, ChatGPT or Cursor: https://coldiq.com/mcp