The best waterfall enrichment tool depends on what happens after the find. OXYGEN chains 17 email and 13 phone providers, then sends the leads it finds into email, LinkedIn and WhatsApp sequences with a CRM built in, from $49 a month. Clay suits GTM engineers building custom flows. BetterContact, FullEnrich and Persana AI find emails and mobiles for less, and pipe0 serves developers through an API.
By Tim Scheuer, Co-founder of Oxygen · Checked October 16, 2026
Waterfall enrichment asks several data providers in turn until one returns the value you need, such as a work email or a mobile number, and stops there. No single provider covers every company and region, so a chain finds more than any one source. The tools below differ in four ways: how many providers they chain, what a found email or mobile costs, whether a miss is free, and what happens to the lead next. The last one decides your stack: either the same tool sends the sequence and keeps the CRM record, or you export the list into a sequencer and a CRM.
| Tool | Providers chained | Per email / mobile found | Outreach after the find | CRM | Starts at |
|---|---|---|---|---|---|
 OXYGENAgentic marketing and sales platform | 17 for emails, 13 for mobiles; your own keys from the $99 plan | About $0.085 per email and $0.99 per mobile, on average | Email, LinkedIn and WhatsApp in one sequence, stopped by a reply | Built in, with a deals pipeline; two-way HubSpot sync | Free plan; paid from $49 a month |
 ClayGTM data platform with waterfalls | 24 work-email finders on Clay credits, or your own keys | About 1 data credit per email; about 5 per phone, from Launch | Email Sequencer from Launch; LinkedIn through partner tools | Audiences profiles on paid plans; no deals pipeline | Free; Launch $185 a month ($167 billed yearly) |
 BetterContactWaterfall enrichment for emails and mobiles | 20+ data sources | 1 credit per email, 10 per mobile: about $0.05 and $0.49 on the $49 plan | None; sends results to HubSpot, Clay, Make and Zapier | None; HubSpot integration | 50 free credits; Starter $15 a month for 200 |
 FullEnrichWaterfall enrichment for emails and mobiles | 25+ sources | 1 credit per work email, 10 per mobile: about $0.06 and $0.58 on the entry plan | None; HubSpot, API, MCP, Zapier, Make and Clay | None; pushes contacts and companies to HubSpot | 50 free credits; Pro $29 a month for 500 credits |
 Persana AIAI enrichment and research platform | 100+ data providers | 1 credit per email, 10 per phone: about $0.04 and $0.43 on Starter | Pushes to Smartlead, Instantly, Salesloft or Outreach from Growth | HubSpot and Salesforce sync from Pro | Free; Starter $85 a month ($68 billed yearly) |
 pipe0Enrichment API, sheets and MCP | 50+ providers across its waterfalls | About 4.5 cents per work email, 14 per mobile; 3 and 10 at high volume | None of its own; enrolls leads in sequences on your connections | None; writes to your CRM | Pay as you go; plans from $49 a month for 1,600 credits |
OXYGEN Agentic marketing and sales platformBest for: B2B GTM teams that want the emails they find to go straight into email, LinkedIn and WhatsApp sequences and a CRM.
OXYGEN chains 17 email and 13 phone providers, cheaper ones first, and charges only when one finds the value. What sets it apart is what happens next: the leads it finds go from the same table into a sequence that mixes email, LinkedIn and WhatsApp steps and stops when they reply on any channel, and the reply lands on their CRM record. Your team works in the web app, or your own AI agent runs the same steps through the MCP server or the CLI.
Clay GTM data platform with waterfallsBest for: GTM engineers who build custom enrichment flows across many data sources.
Clay builds waterfalls in its tables on Clay's data credits on every plan, Free included, or on your own keys, and its directory lists 24 work-email finders on Clay credits. An email costs about 1 data credit and a phone number about 5. Clay sends email itself through Sequencer, built on Smartlead, from its Launch plan. LinkedIn steps go to partner tools such as HeyReach, La Growth Machine or lemlist, each on its own account and price.
BetterContact Waterfall enrichment for emails and mobilesBest for: Teams that want a low entry price on a verified email and mobile waterfall, and send from another tool.
BetterContact runs a waterfall across 20+ data sources for work emails and mobile numbers, verifies each result and charges only when valid data is found: 1 credit per email and 10 per mobile. It does not send. Results reach your other tools through 28 native integrations and a REST API, among them HubSpot, Google Sheets, Clay, Make and Zapier. OXYGEN also calls BetterContact as the last step of its own email and mobile chains.
FullEnrich Waterfall enrichment for emails and mobilesBest for: Teams that call prospects and need verified mobile numbers as much as emails, with unlimited users.
FullEnrich runs a waterfall across 25+ sources for work emails, personal emails and mobile numbers, verifies what it finds and charges nothing for a miss. A work email costs 1 credit, a personal email 3 and a mobile 10. Every plan has unlimited users, and it reaches your tools through a HubSpot integration, an API, an MCP server and Zapier, Make or Clay. It does not send sequences. FullEnrich is also one of the providers OXYGEN's waterfall can call.
Persana AI AI enrichment and research platformBest for: Teams that want enrichment, AI research agents and web scrapers on one set of credits.
Persana AI runs email and phone waterfalls across 100+ data providers, with AI research agents, web scrapers and playbooks on the same credits. An email found costs 1 credit and a phone found 10. From its Growth plan it pushes leads to sequencers such as Smartlead, Instantly, Salesloft and Outreach and runs on your own API keys; HubSpot and Salesforce sync start on Pro, and its own email sequencing and sending on Unlimited.
pipe0 Enrichment API, sheets and MCPBest for: Developers and coding agents that build enrichment into their own product or workflows.
pipe0 finds and enriches B2B contacts across 50+ providers, in sheets, through an API or from coding agents over MCP. Every waterfall bills only the provider that found the data, and misses cost nothing; its pricing page lists averages of 4.5 cents per work email and 14 cents per mobile, or 3 and 10 cents with high-volume pricing. Its actions write to your CRM, post to Slack and enroll leads in sequences on your own connections, so the sending stays in another tool.
| If you need | Pick |
|---|---|
| Enrichment, email, LinkedIn and WhatsApp sequences and a CRM in one workspace | OXYGEN |
| Custom enrichment flows across many sources, built by a GTM engineer | Clay |
| The lowest entry price for verified emails and mobiles | BetterContact |
| Mobile numbers for a team that calls, with unlimited users | FullEnrich |
| Enrichment plus AI research agents and web scrapers | Persana AI |
| Enrichment inside your own product or coding agent, paid per result | pipe0 |
Waterfall enrichment asks data providers in order until one returns the value you need, such as a work email or a mobile number, then stops. Each extra provider covers companies and regions the others miss, so a waterfall finds more than any single source, and the order of the providers decides what you pay.
Not on OXYGEN, BetterContact, FullEnrich, Persana AI or pipe0: each charges for a found value, and BetterContact and FullEnrich only for a verified one. Email verification can still cost credits, and on OXYGEN a call on your own provider key pays a small platform fee even on a miss, so read each pricing page for those.
Order matters more than the count. Put the cheaper sources first, send only the rows still missing to the expensive ones, and verify every email before you send. OXYGEN's default chain works that way, with an aggregator as the last step, and you can change the order for any run.
If the same team finds the contacts and sends the outreach, one tool saves the export, the field mapping and the sync between them, and a reply can update the record the data came from. OXYGEN works that way, with email, LinkedIn and WhatsApp in one sequence and a CRM built in. If your data feeds several teams and tools, a specialist such as FullEnrich or BetterContact plus your own sequencer is the simpler fit.
On OXYGEN, yes, from the $99 plan: each step in the chain runs on your key or on OXYGEN's account, and a step without a connected key is skipped. Clay runs waterfalls on your own keys on every plan, Persana AI from its Growth plan, and FullEnrich on Enterprise.
On list prices, pipe0, Persana AI, BetterContact and FullEnrich find a work email for about 3 to 6 cents. OXYGEN averages $0.085 per email found and Clay about 1 data credit. OXYGEN pays off when the same workspace also runs the sequences and the CRM, so you do not run a second tool to reach the people you found.
Verify the emails, then load the contacts into a sequence and the CRM. With an enrichment specialist that means an export or an integration into your sequencer. In OXYGEN the found email is already on the table the sequence enrolls from, and a reply on email, LinkedIn or WhatsApp stops the sequence and lands on the contact's CRM record.
We make OXYGEN, so it comes first and you should read this as an interested list. The other tools are the ones teams compare most often when they pick a waterfall enrichment tool. Each one is described from its own website, pricing page and docs, checked on the dates below; OXYGEN's facts and prices come from the product and its live price list. Prices are the cheapest self-serve plan each vendor lists.
The products named here are trademarks of their owners and are not affiliated with OXYGEN. Something out of date? Tell us.