Most B2B sales teams accept a painful reality: 30-40% of their prospect lists simply don't have reachable contact data. One tool says "not found." You move on. The deal never happens. FullEnrich was built to fix exactly that - and it does it in a way that's fundamentally different from anything that came before it.
In this article, you'll learn:
- What FullEnrich is and why the waterfall model changes everything
- How the enrichment process actually works under the hood
- What the credit system looks like and what it costs in practice
- How practitioners at outbound agencies use it in real workflows
- Where FullEnrich wins - and where it doesn't
What Is FullEnrich?
FullEnrich is a B2B contact enrichment platform. Its job is to find verified business email addresses and mobile phone numbers for a list of prospects you already have.
That sounds unremarkable. Every enrichment tool claims to do the same thing.
The difference is the architecture. Most enrichment tools - Apollo, ZoomInfo, Hunter - maintain one proprietary database. If your prospect isn't in that database, you get nothing. You've bought access to one source of truth, and when that source doesn't have the answer, neither do you.
FullEnrich operates on a different model: waterfall enrichment. Instead of querying one database, it cascades through 20+ premium data vendors in sequence - including Datagma, Wiza, Hunter, PeopleDataLabs, and Clearbit, among others. The first vendor checks for the email. If it's not there, the second vendor runs. Then the third. The cascade continues until a verified result is found or all sources are exhausted.
The practical result: FullEnrich claims an 80%+ find rate across global markets. Teams that previously got 60-70% match rates from single-source tools report a significant jump when they switch. One agency owner on Reddit put it plainly: "I was able to find emails for 94% of the contacts Apollo found - but couldn't return data on."
How the Waterfall System Works?
The mechanic is simple. You give FullEnrich a LinkedIn URL, a name + company, or a CSV file. The platform runs its cascade:
- Source 1 is queried. No result, or result fails verification.
- Source 2 picks up where Source 1 left off.
- This continues across 20+ vendors.
- The first valid, verified result is returned to you.
The platform also applies triple email verification - three separate verifiers confirm that an email is deliverable before it's returned. This matters because a single bounce rate above 5% starts damaging your domain reputation with Gmail and Outlook. FullEnrich's verified emails reportedly produce a bounce rate below 1-2%.
There's an additional layer: catch-all domain detection. Many company domains are configured to accept any email sent to them, making standard verification useless. FullEnrich claims to verify up to 80% of catch-all addresses - a problem most tools refuse to touch.
Geographic coverage also adapts dynamically. The algorithm selects vendors based on where your prospects are located, which is why the find rates vary by region:
This matters for outbound teams running campaigns into multiple markets. A static database will always have gaps in less-covered regions. A vendor-routing waterfall compensates
What FullEnrich Actually Enriches?
Contact enrichment is the core, but the platform returns more than just email and phone:
- Business email addresses (verified, with catch-all detection)
- Personal/private email addresses (primarily used by recruiters)
- Mobile phone numbers (direct dials, not switchboard)
- Job titles and LinkedIn profile data
- Company details - industry, headcount, website, location
- Reverse email lookup - find a LinkedIn profile from an email address
The phone number capability deserves special attention. Most enrichment tools stop at email. FullEnrich returns direct mobile numbers, which is increasingly valuable as email inboxes get more competitive. As one practitioner noted after switching from Cognism: "It has provided me with mobile numbers to the correct people who were not on Cognism."
Pricing: Pay Only When It Works
FullEnrich uses a pay-on-success credit model. You don't spend a credit unless the platform returns a result.
Credit costs per enrichment:
- 1 business email = 1 credit
- 1 personal/private email = 3 credits
- 1 mobile phone number = 10 credits (no charge if the number is a landline or inactive)
Current plan pricing:
Two details worth knowing: credits roll over for 3 months, so unused credits don't disappear at month-end. And every plan includes unlimited team members - no per-seat pricing.
At the Pro tier, a verified business email costs roughly 4-5 cents. That's well below what agencies pay for lists from enterprise providers. The phone math is different: 10 credits per number means 100 phone numbers costs the same as 1,000 emails. For high-volume cold calling operations, that can add up fast.
How Outbound Practitioners Actually Use It?
The clearest signal of a tool's real value comes from how practitioners integrate it into working workflows - not from product pages.
As an Apollo top-up
The most common Reddit use case: teams use Apollo as their primary database because it's cheap and broad. When Apollo can't return an email for a contact, they export that gap list as a CSV and run it through FullEnrich. The waterfall frequently recovers 30-50% of contacts Apollo missed. The result is a fuller list without paying for a more expensive primary database.
Inside Clay workflows
FullEnrich has a stable API and native integration with Clay - the workflow automation tool that's become the backbone of modern outbound infrastructure. A typical workflow:
- Scrape a list of target companies (via Apify or similar)
- Find decision-makers on LinkedIn Sales Navigator
- Route those profiles through the FullEnrich module in Clay
- Verified contacts feed automatically into a sequence in Smartlead or Instantly
The appeal here is automation without complexity. Teams building these workflows don't want to manage five separate vendor contracts and API keys. FullEnrich acts as a unified enrichment layer.
As a Clay-free API integration
For more technical teams, the FullEnrich API plugs directly into HubSpot, Salesforce, or custom CRM workflows. When a new lead enters the system without contact data, an automated enrichment call runs and fills in the blanks - without anyone touching it manually.
Where FullEnrich Has Limitations?
The Chrome extension issue is worth flagging. LinkedIn shut down FullEnrich's browser extension in June 2024 - LinkedIn tightened its scraping policies, and FullEnrich disabled the extension to protect the broader platform from being banned. Direct enrichment from LinkedIn profiles via the extension no longer works. The workaround is manually pasting LinkedIn URLs into the web platform, which is slower.
The phone credit cost is a real constraint for cold calling-first teams. At 10 credits per mobile number, a Pro plan gives you 100 phone numbers per month. If your primary channel is calling, you'll exhaust credits quickly. At that volume, specialized calling data providers may offer better economics.
And while the triple verification is strong, some practitioners in high-stakes campaigns run an additional verification pass through tools like Reoon or MillionVerifier as a final safety net - not because FullEnrich's verification is poor, but because at scale, even 1-2% bounces across 50,000 sends can create deliverability problems.
One honest note from the broader enrichment market: waterfall enrichment platforms like FullEnrich (and competitors like BetterContact) don't generate their own data. They aggregate from third-party vendors. That means results depend on the quality and freshness of those underlying sources. Enriching contact data is only step one - whether that contact is still at the company, in a buying stage, or in your ICP is a separate question.
FullEnrich vs. the Alternatives: When to Choose What?
FullEnrich wins on precision over volume. When you have a tight, well-researched prospect list and you can't afford to miss contacts because a single tool came up empty, the waterfall approach pays for itself.
The Bottom Line
FullEnrich solves a specific, expensive problem: the gap between "I have a prospect list" and "I can actually reach these people."
The waterfall model isn't just a feature - it's a structural advantage over single-source tools. For teams running targeted outbound into defined ICPs, the difference between 60% and 80%+ coverage is significant. That's 20 more reachable contacts per 100 on your list. At any reasonable conversion rate, that gap becomes pipeline.
At $29-55/month with no seat fees and rollover credits, it's one of the lower-risk tools to test in your outbound stack.
Start with the 50 free credits at fullenrich.com. No credit card. You'll know within an hour whether the hit rate justifies adding it to your workflow.
At Vanderbuild, we build and run outbound infrastructure for B2B SaaS companies - from ICP definition through to pipeline generation. If you're evaluating your enrichment stack or want to see how waterfall enrichment fits into a full outbound workflow, book a free consultation.
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