Reference & Lookup Data · Integration

Kickbox

Add Kickbox to your product for your customers, and give your AI agents governed access to it.

Embed a Kickbox integration so your customers can verify email addresses from inside your product using their own account, with usage and cost on their side rather than a shared key you have to police. fastn handles per-customer credentials, retries, and API upkeep, and batch verification is throttled so a large list does not exhaust a customer's allowance in one run.

Start freeBook a demo

In your product

Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.

Verify an email address at the point of entry so bad data never reaches your database.

Let customers verify their own lists using their own Kickbox account and quota.

Store the verification result against a record so your product can act on deliverability later.

Throttle a large batch verification so one customer's import does not consume their whole allowance.

For your AI agents

Governed, audited access for the agents you build, through the MCP server.

An agent verifies an address before it adds a contact to a customer's list.

An agent checks a batch of records and reports which addresses look undeliverable.

Every verification runs per tenant and is logged, so a result can be traced to the request behind it.

Example prompt

Verify the email addresses on these contacts and tell me which ones are undeliverable.

Set up Kickbox in 4 steps

  1. 01Open the Kickbox connector from your fastn dashboard.
  2. 02Have each customer supply their own Kickbox API key.
  3. 03Map where verification results are stored on your records, then enable the actions.
  4. 04Call them from your product, or expose them to an agent through the MCP server.

Why teams use the Kickbox integration

What you get by embedding it with fastn instead of building it yourself.

  • Ship a Kickbox integration without building it. Your customers connect their own Kickbox account inside your product and work their lookups, results and reports there, with no per-customer code on your side.
  • Handle the part that actually costs time: these are metered read sources, so an uncached lookup on every page view burns the customer's allowance. fastn owns the auth, token refresh, rate limits, pagination and breaking-change fixes, so a Kickbox update is not your on-call problem.
  • One integration serves your product and your agents. The same governed Kickbox connection powers in-product features and gives AI agents scoped, audited access, so you answer questions from an authoritative outside source without holding that data yourself without wiring it twice.

Used by these teams

MarketingData & Analytics

Compare with

Clearbit

Works well with

MailchimpSendGrid

Often used alongside

Tools the same teams tend to run next to Kickbox, across other categories.

SalesforceHubSpotNotionSnowflake

Kickbox integration FAQ

How do I add a Kickbox integration to my product?

Enable the Kickbox connector in your fastn dashboard, then let each customer authenticate their own Kickbox account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Kickbox client code in your app and no per-customer branch in your codebase. Setup is 4 steps.

Do my customers each connect their own Kickbox account?

Yes. Every connection is scoped to the individual customer, so each authorises their own Kickbox account and only ever sees their own lookups, results and reports. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.

Can AI agents use this Kickbox integration?

Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent verifies an address before it adds a contact to a customer's list.

Who maintains the Kickbox integration?

fastn does. When Kickbox changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.

Whose credentials does a Kickbox lookup run under?

Each customer's own. Quota and cost land on the customer that caused them rather than on a shared key you have to meter and re-bill, and one heavy customer cannot exhaust another's allowance.

How should Kickbox results be cached?

Per tenant, with a window that matches how fast the underlying data actually moves. Kickbox is a read source rather than a system of record, so the same query returns the same answer until the source changes, and caching is the difference between a sustainable integration and one that exhausts a customer's allowance on a busy page.

What can I build with the Kickbox integration?

A common starting point: verify an email address at the point of entry so bad data never reaches your database. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.

How much does the Kickbox integration cost?

It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Kickbox does not change your per-connector cost. You can start free with 3 connected accounts.

Add Kickbox to your product

Start free with 3 connected accounts. No sales call required, and no per-customer integration code.

Start freeRead the docs
← All integrations