# Connect the tools you already trust.

> Connect the tools you already use to Ballast: bring-your-own-key email verification, lead source presets, AI models, n8n automation and MCP tools for Claude and Cursor.

Canonical: https://ballast.to/integrations
Last updated: 2026-10-30

Integrations & ecosystem

Ballast never marks up third-party services or locks you into closed ecosystems. Bring your own verifier keys, import directly from your lead sources, connect your own AI models, or control campaigns with MCP and n8n.

Email verification

## Bring your own verifier key.

Connect your account with zero markup. Free syntax, disposable and MX checks run on every lead first, so only valid-looking addresses spend your verifier credits.

- ### [NoParam](https://ballast.to/docs/integrations#verifier)
  Privacy-focused email validation. Real-time syntax, MX and existence checks with zero lead retention.
- ### [MillionVerifier](https://ballast.to/docs/integrations#verifier)
  High-volume email verification with non-expiring credits and deep mailbox existence checks.
- ### [ZeroBounce](https://ballast.to/docs/integrations#verifier)
  Enterprise verification with spam trap detection, complainer identification and toxic domain filters.
- ### [NeverBounce](https://ballast.to/docs/integrations#verifier)
  Single and bulk verification with automated bounce analysis and custom webhook support.

Lead sources and migration

## Import clean CSVs from where you scrape.

Native column presets for modern outbound databases. Custom variables, waterfall outputs and notes stay mapped automatically.

- ### [Apollo.io](https://ballast.to/docs/leads)
  One-click mapping for Apollo CSV exports. Maps company names, verified emails and phone numbers.
- ### [Clay](https://ballast.to/docs/leads)
  Direct ingestion of Clay tables. Retains waterfall enrichment outputs and custom research columns.
- ### [Instantly](https://ballast.to/migrate/instantly)
  Switch from Instantly without rebuilding lead lists. Maps variables, tags and sequence history.
- ### [Smartlead](https://ballast.to/migrate/smartlead)
  Export format support for Smartlead. Unpacks and flattens embedded custom fields JSON into variables.
- ### [Lemlist](https://ballast.to/migrate/lemlist)
  Import Lemlist CSV exports directly. Preserves custom variables and removes platform state.
- ### [Custom CSV & Excel](https://ballast.to/docs/leads)
  Any spreadsheet with an email column. Ballast detects names, companies and variables on upload.

AI models

## Run classification on your own models.

Connect your OpenAI or Gemini key to categorize replies, label sentiment and draft sequences without monthly AI token caps.

- ### [OpenAI](https://ballast.to/docs/integrations#ai-provider)
  Use your own OpenAI API key for GPT-4o and GPT-4o-mini. Categorizes replies and drafts sequences.
- ### [Google Gemini](https://ballast.to/docs/integrations#ai-provider)
  Connect Gemini 2.5 Flash or Pro with your API key for sentiment scoring and custom objection handling.

Developers and workflows

## Protocols, agents and webhooks.

Automate outbound with native tools: Model Context Protocol (MCP) for AI coding assistants, official n8n community node for workflow builders, signed webhooks and REST API.

- ### [Model Context Protocol (MCP)](https://ballast.to/docs/mcp)
  Native MCP server. Inspect campaigns, pause struggling mailboxes and answer replies directly from Claude or Cursor.
- ### [n8n Community Node](https://ballast.to/docs/integrations#n8n)
  Official n8n-nodes-ballast package. Trigger workflows on replies, bounces or unsubscribes, and sync with your CRM.
- ### [REST API & Webhooks](https://ballast.to/docs/api)
  Strictly typed REST API at ballast.to/api/v1 with signed webhooks for real-time lead and campaign events.
- ### [Google Postmaster Tools](https://ballast.to/docs/integrations#postmaster)
  Direct OAuth integration to read Gmail domain reputation and user-reported spam rates every morning.