What Waterfall is
Waterfall is a waterfall enrichment tool in the B2B go-to-market stack. In the vendor's own words: “One data B2B solutionto connect them all.” Put plainly, a tool in this category asks several data providers in turn and keeps the first good answer, so coverage beats any single source.
Where it sits in an outbound stack
Most outbound stacks are four layers: the data that decides who you talk to, the channel that carries the message, the writing that earns a reply, and the system of record that remembers what happened. Waterfall sits in the waterfall enrichment layer. Tools beside it are worth comparing on coverage and price; tools in the other layers are worth wiring to it rather than replacing it with.
Using Waterfall with M for Mercury
Waterfall is a data layer, and data is where LinkedIn outreach either works or wastes a sender. Mercury's Lead Finder searches 450M+ contacts and returns the LinkedIn profile to connect with alongside a verified work email, then enriches whatever is missing column by column. If Waterfall already holds your list, Mercury takes it from there: enrol the audience in a journey, spread it across senders, and pace every send inside safe limits.
Questions people ask about Waterfall
What is Waterfall?
Waterfall is a waterfall enrichment tool used by B2B sales, marketing and recruiting teams. In the vendor's own words: One data B2B solutionto connect them all.
What category does Waterfall fall into?
Waterfall is listed under Waterfall Enrichment in this directory.
What are the alternatives to Waterfall?
The closest tools in the same categories are FullEnrich, Clay, lemlist, BetterContact, LeadsFactory. All 6 waterfall enrichment listings sit on the Waterfall Enrichment category page.
Can I use Waterfall alongside M for Mercury?
Yes. Mercury runs the LinkedIn side — audiences, journeys, message writing, safe pacing across every sender and one shared inbox — and connects out through HubSpot, Salesforce, Zoho CRM, Attio, Slack, Zapier, Make, n8n, webhooks and its own API, so Waterfall can stay exactly where it is in the stack.
Listed for reference. M for Mercury is not affiliated with Waterfall, and no listing here is paid for. Product names and logos belong to their owners.
