What Datafast is
Datafast is a data attribution tool in the B2B go-to-market stack. In the vendor's own words: “Revenue-driven web analytics for growth.” Put plainly, a tool in this category says which touch actually earned the pipeline.
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. Datafast sits in the data attribution 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 Datafast with M for Mercury
Datafast 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 Datafast 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 Datafast
What is Datafast?
Datafast is a data attribution tool used by B2B sales, marketing and recruiting teams. In the vendor's own words: Revenue-driven web analytics for growth.
What category does Datafast fall into?
Datafast is listed under Data Attribution in this directory.
What are the alternatives to Datafast?
The closest tools in the same categories are Shield, FirstPromoter, Sparkroom, Attribution, C3 Metrics. All 30 data attribution listings sit on the Data Attribution category page.
Can I use Datafast 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 Datafast can stay exactly where it is in the stack.
Listed for reference. M for Mercury is not affiliated with Datafast, and no listing here is paid for. Product names and logos belong to their owners.
Shield
FirstPromoter
Sparkroom
Attribution
C3 Metrics
CaliberMind
Cometly
Full Circle