TL;DR: A waterfall can only work with what you feed it. If your list arrives full of duplicates, malformed rows, and stale records, every provider in the chain wastes paid calls trying to match junk, and your costs climb while your data quality does not. Bulk enrichment is the hygiene step that comes first: upload the list, clean and complete it against verified records in minutes, and only then send it through the waterfall. Clean inputs mean fewer wasted credits, less cleanup, and a far higher first-pass match rate.
Every campaign starts with a list. An event CSV, a partner import, a conference attendee download. And every list arrives incomplete: missing emails, no job titles, blank company sizes, phone numbers from years ago, the same person entered three times under two spellings.
A waterfall does not fix that. It inherits it. Feed a messy list into a chain of providers and each one burns credits trying to match rows that were never clean enough to match in the first place. You pay for lookups on duplicates. You pay premium fallback rates to “complete” records that are actually junk. And you still end up with a CRM full of data you cannot trust.
The fix is to clean the inputs before anything enters the waterfall. That is what bulk enrichment is for.
What bulk enrichment actually does
Bulk enrichment takes a whole list at once, matches it against verified records, and fills in what is missing: emails, phone numbers, job titles, company details. Instead of enriching one record at a time, it processes thousands in parallel and hands you back a complete, deduplicated, standardized list that is ready to use.
Think of it as the prep step. The waterfall is for routing live records through a priority chain. Bulk enrichment is for getting a static list into clean shape before that chain ever runs, so the waterfall spends its paid calls on real gaps rather than on cleanup.
Why hygiene belongs first
Cleaning the list before the waterfall changes the economics of everything downstream.
You raise the first-pass match rate. A standardized record with a correct company name and domain matches far more reliably than a malformed one. More records resolve on the first source, which is exactly where waterfall costs are lowest.
You stop paying to enrich duplicates. Deduplicating before enrichment means you are not buying the same contact twice under two slightly different names.
You cut ops cleanup time. Conflicts and formatting errors get resolved once, up front, instead of being discovered later by a rep or a reporting dashboard.
You protect deliverability. Sending a campaign to a list full of stale and invalid addresses spikes your bounce rate and damages sender reputation. Clean first, send second.
How it works
The process is built to be fast and hands-off.
- Upload your file: CSV, spreadsheet, or direct import.
- Select the fields you need: email, phone, title, company size, and so on.
- Let it process in parallel: thousands of records matched, deduplicated, and enriched at once.
- Export or sync: push the clean list to your CRM or marketing platform, or download the enriched file.
Processing happens in the background and returns results in minutes, not hours.
The accuracy question
Bulk enrichment works because it is based on verified data, not guesses. Records are matched against real contact and company databases, so a match either exists or it does not, and a phone number either works or it does not. That is different from manual research, where someone infers an address from a name and a domain, and different from scraped data, which is unreliable by nature.
Leading your hygiene step with a verified source means the list you hand to the waterfall is already accurate: 280M+ verified contacts and 70M+ companies, roughly 95% email accuracy, and 86% phone accuracy. The cleaner and more accurate the input, the less work, and the less spend, the waterfall has to do.
Common use cases
- Campaign prep: an event list arrives, you enrich and dedupe it, and you launch to your email platform the same day.
- SDR prospecting: a partner sends a raw list, you clean and complete it, and reps load it into their outreach tool with verified numbers.
- Database hygiene: a quarterly sync refreshes company info and titles across the CRM so reporting stays trustworthy.
- List building: a Sales Navigator export gets enriched and standardized, ready for first contact.
Getting started
Take your most recent event or campaign list and ask two questions. How much time did your team spend preparing it, and how many records bounced when you sent to them. Then run that same list through bulk enrichment before it touches your waterfall, and compare. The difference is usually the gap between a list that needs work and a list that is ready to use.
Next step
Take your most recent campaign list or event import. How much time did your team spend preparing it? How many records bounced when you sent to them?
Try bulk enrichment on your next list. Compare the results.
→ Start with Lusha bulk enrichment
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