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Sumble vs. ZoomInfo and Apollo

ZoomInfo and Apollo are directories of companies and contacts with prospecting workflows built around them. Sumble records what happens inside the account: which team uses what, what it is working on and who is on it.

By Anthony Goldbloom4 min read

TL;DR

A directory tells you who works at a company. Sumble tells you what their team is doing and why that person matters.

  • ZoomInfo and Apollo are built around company and contact records, with titles, emails and phone numbers.
  • Sumble links companies, teams, projects, technologies and people, keeps the history, and is structured so an AI agent can follow those links.
  • Sumble also has the company, people and contact data, so it can be your main source of GTM data.

What Sumble is

Sumble reads job postings, financial filings, company websites, professional profiles, conference agendas, speaker bios and press releases. It attaches each piece of evidence to the organization, team, project, technology or person it describes, and it keeps evidence after the source page goes offline.

You get one record per company that you can filter, count and join against your CRM. It updates daily and can sync into your CRM or data warehouse. Agents read it through the API or the MCP server.

What ZoomInfo and Apollo are

Both are B2B sales intelligence and prospecting platforms. The core is a directory: company attributes, job titles, emails and phone numbers. ZoomInfo also offers org charts, technographics and intent signals. Apollo bundles its data with sequencing and outbound tools.

The unit is the company record and the contact record. Technology and intent data, where present, is reported for the company as a whole.

Where Sumble is stronger

  • Depth. Sumble collects the evidence a company leaves in public, such as job posts, filings and conference talks, and gives you more about each account than a list of its employees.
  • Links between records. A person is tied to a team, and the team to its technologies and projects. That is how you get from "a Director of Data Engineering" to "the one whose team is adopting Snowflake".
  • History. Sumble keeps evidence over time, so you can see technologies, projects and teams change.
  • Collection built on current AI. Sumble uses language models to extract, clean and link what it collects, and evaluates the results. That is what makes team-level and project-level detail possible at this scale.
  • Built for agents. The data is a set of linked records that an agent can walk through the API or MCP server, from a company to a team to a person.

Where ZoomInfo and Apollo are stronger

Workflows built around the data. ZoomInfo has long-standing integrations with CRMs and sales tools for prospecting and enrichment. Apollo ships sequencing and outbound execution in the same product as its contact data.

Example: Teradata and Snowflake at Commonwealth Bank

Say you sell data integration software and Commonwealth Bank of Australia is on your account list.

With Sumble. The bank's Business Banking team named Teradata in ten job posts between November 2023 and February 2025, for roles such as Senior Data Analyst and Manager of Pricing. It has not named Teradata since. From July 2026 the same team's posts for analytics and fraud roles name Snowflake. Sumble identifies the people on that team who most likely owned the migration, with their titles and LinkedIn profiles. Across the bank, Sumble ties Snowflake to more than 150 named teams.

Job posts show what a team hires for. They are not a migration announcement. But the pattern tells you which division to call, what it ran before and who works there.

With a directory. You can list the bank's data engineering directors and managers with their emails and phone numbers, perhaps next to a flag that says the company uses Snowflake. You get a list of people. You don't get which of them works in the division that changed warehouses, so every message starts from the job title.

Choosing between them

GTM teams need to know what is happening inside an account, not only who works there. Sumble provides company, people and contact data together with the team, project, technology and history that targeting, scoring, territory planning and outreach depend on.

If you rely on a directory's sequencing or its sales tool integrations, keep it for that and use Sumble for the account data.

Book a demo to run this comparison on one of your own accounts.