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Connect Indexbrain to Apollo to search for people, look up companies, and read your saved contacts — read-only.

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Setup

1

Create an API key

In Apollo, go to Settings > Integrations > API > API Keys and create a new key.
2

Go to Integrations

Navigate to Settings > Integrations > Apollo.
3

Add your API key

Paste the key and connect.
4

Test the connection

Ask Indexbrain to search for people at a target company.
Access and rate limits depend on your Apollo plan — some capabilities may require a master key. Anyone with the key can take actions in your Apollo account, so treat it like a password.

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Capabilities

Searches Apollo’s full people database — not just contacts already saved to your account — filtered by job title, seniority, company size, and location.
Apollo’s People Search API does not return email or phone numbers, by Apollo’s own design — only identity, title, and company information. Full contact-detail enrichment for a specific person isn’t built here.

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Company lookup

Returns a company’s size, industry, technology stack, description, and location — matched by domain (most reliable) or name.

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Saved contacts

Contacts already saved in your connected Apollo account are synced automatically and searchable like any other connected source:

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What Indexbrain does not do in Apollo (yet)

  • No bulk domain enrichment — enriching a list of company domains in one batch isn’t supported; use company lookup one at a time.
  • No sequence/campaign analytics — reply rates and performance on Apollo sales sequences aren’t available. This is a separate Apollo product area (sales engagement, not data/contacts).
  • No write access — Indexbrain cannot create, update, or add contacts/sequences in Apollo.

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Troubleshooting

  • Confirm your API key has search access — some Apollo plans restrict certain endpoints to a master key.
  • Try broadening your filters (fewer titles, a wider employee range).
  • Try the domain instead of the name — domain matches are more reliable.
  • Not available through Indexbrain’s People Search today — Apollo’s own API separates search from contact enrichment, and enrichment isn’t built here.