Waterfall enrichment tools ask data providers in turn, and the best one depends on what happens after the find. OXYGEN chains 17 email and 13 phone providers. It sends leads into email, LinkedIn and WhatsApp sequences and a built-in CRM, from $49 a month. Clay suits GTM engineers building custom flows. BetterContact and FullEnrich find emails and mobiles for less, and AI agents call Deepline and pipe0 through an API or MCP server.
By Tim Scheuer, Co-founder of Oxygen · Checked October 23, 2026
Waterfall enrichment is how a data enrichment tool combines vendors for more coverage. It asks providers in turn and stops at the first one that returns the work email or mobile number you need. Check five things. How many providers does it chain? What does a found email or mobile cost? Is a miss free? Can your AI agent call it? And does the lead go straight into a sequence and a CRM, or out to other tools?
| Tool | Providers chained | Per email / mobile found | How you pay | API, MCP or CLI | 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 | Credits from a plan or top-ups that never expire; finders charge only for a found value, and email checks bill even on a miss | Hosted MCP server, a CLI for Claude Code or Codex, and an API | 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 | 150+ data providers on Clay credits, or your own keys | About 1 data credit per email; about 5 per phone, from Launch | Plans with data credits and actions; no charge when nothing is found | CLI and API for coding agents on every plan; MCP server for reps | Email Sequencer from Launch; LinkedIn through partner tools | Contact and company profiles (Audiences) 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 | Monthly or yearly credits that roll over; charged only for valid data | REST API with webhooks and SDKs for Node and Python | None; pushes contacts to lemlist, Smartlead and Instantly | None; HubSpot and Salesforce integrations | 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 | Monthly or yearly credits that roll over for 3 or 12 months; misses are free | REST API and an MCP server for Claude, ChatGPT or Cursor | 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 |
 DeeplineGTM data API and CLI for coding agents | 13 email finders on its rate card, or your own keys | Its pricing page lists email finding from $0.014, phone from $0.17 | Pay as you go at $0.10 a credit; a miss can cost credits | Claude Code plugin and CLI, a remote MCP server and an API | None of its own; adds leads to Instantly, Smartlead, lemlist or HeyReach | None; writes to HubSpot, Salesforce or Attio | Pay as you go: $0 a month plus usage; Growth $395 a month plus usage |
 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 | Pay as you go at $0.035 a credit that never expires, or monthly plans | MCP server for Claude Code, Cursor and Codex; an API and a TypeScript SDK | 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, each charging only when it finds the value. The leads it finds then go from the same table into a sequence of email, LinkedIn and WhatsApp steps. It stops when they reply on any channel, and the reply lands on their CRM record. Your team works in the web app, or your AI agent runs the same steps through the MCP server or CLI.
Clay GTM data platform with waterfallsBest for: GTM engineers who build custom enrichment flows across many data sources.
Clay builds waterfalls from 150+ data providers, on Clay's data credits or your own keys, on every plan. An email costs about 1 data credit and a phone number about 5. Coding agents such as Claude Code use its CLI and API on every plan, and reps use its MCP server. Clay sends email through Sequencer, built on Smartlead, from its Launch plan. LinkedIn steps go to partner tools such as HeyReach, each on its own plan.
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, and verifies each result. It 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. They include HubSpot, Salesforce, Clay and Zapier, plus lemlist, Smartlead and Instantly for sequences. 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. OXYGEN can also call FullEnrich on your own FullEnrich key.
Deepline GTM data API and CLI for coding agentsBest for: GTM engineers whose coding agent runs enrichment from Claude Code, and who want to pay per use with no platform fee.
Deepline routes enrichment across data providers for your own AI agent: a Claude Code plugin and CLI, a remote MCP server and an API. Its email rate card lists 13 email finders, and its pricing page lists email finding from $0.014. Pay as you go has no platform fee, and 10 credits cost $1. It writes to HubSpot, Salesforce or Attio and adds leads to Instantly, Smartlead, lemlist or HeyReach campaigns, so the sending stays in those tools.
pipe0 Enrichment API, sheets and MCPBest for: Developers and coding agents that build enrichment into their own product or workflows.
pipe0 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 at high volume. Its actions write to your CRM, post to Slack and enroll leads in sequences on your own connections.
| 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 |
| Verified emails and mobiles on a monthly plan from $15 | BetterContact |
| Mobile numbers for a team that calls, with unlimited users | FullEnrich |
| Enrichment your coding agent runs from Claude Code, with no platform fee | Deepline |
| Enrichment inside your own product, paid per result with credits that never expire | 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. All six data enrichment tools on this list combine vendors this way, and the order of the providers decides what you pay.
OXYGEN, Clay, FullEnrich, Deepline and pipe0 offer an MCP server, which lets an AI agent like Claude Code use the tool. All five, and BetterContact, also offer an API for your own code; OXYGEN, Clay and Deepline add a CLI for the terminal. OXYGEN, Deepline and pipe0 sell pay-as-you-go credits with no monthly plan; Clay, BetterContact and FullEnrich sell plans. Those credits never expire on OXYGEN or pipe0 and last a year or more on Deepline.
Pick BetterContact for the lower entry price and FullEnrich for an MCP server, personal emails and unlimited users. Both charge only for found, verified data, at 1 credit per email and 10 per mobile. BetterContact runs 20+ sources from $15 a month for 200 credits; from its $49 plan, it charges only for mobiles scored as likely to connect. FullEnrich runs 25+ sources from $29 a month for 500 credits, and unused credits roll over for 3 to 12 months.
Not on Clay, BetterContact, FullEnrich or pipe0: each charges for a found value, and BetterContact and FullEnrich only for a verified one. OXYGEN's finders do too, but name-and-domain lookups also pay for guessed-email checks. Deepline says a miss on its account can still cost credits when an upstream provider bills the attempt. Email checks can cost credits too. On OXYGEN or pipe0, a call on your own provider key pays a small fee even on a miss.
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 one team finds the contacts and sends the outreach, yes: one tool saves the export, the field mapping and the sync. A reply can then 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 runs on your key or OXYGEN's account, and a step set to your key is skipped until you connect it. Clay takes your keys on every plan, Deepline adds no markup to the provider's charge and pipe0 charges a small fee per call. BetterContact and FullEnrich keep your own keys for Enterprise.
Deepline's pricing page lists email finding from 1.4 cents. BetterContact, FullEnrich and pipe0 find a work email for about 3 to 8 cents. OXYGEN averages $0.085 per email found and Clay about 1 data credit, from 5 cents each. OXYGEN pays off when the same workspace also runs the sequences and the CRM, with no second tool to reach the people you found.
We make OXYGEN, so it comes first and you should read this as an interested list. We chose the other waterfall enrichment tools ourselves, and each entry says who it suits.
Facts and prices for every tool but OXYGEN come from its vendor's own pages, such as its website, pricing and docs. We checked them on the dates below. OXYGEN's facts and prices come from the product and its live price list.
The products named here are trademarks of their owners and are not affiliated with OXYGEN. Something out of date? Tell us.