Heymarket

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

Yes. Every connection is scoped to the individual customer, so each authorises their own Heymarket account and only ever sees their own messages, conversations and participants. 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.

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 drafts a reply grounded in the conversation history for a human to send.

fastn does. When Heymarket 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.

Yes. Every customer authorises their own Heymarket account, so messages, meetings and notifications originate from their workspace under their permissions. You never proxy through a shared account, which also means a customer revoking access affects only their own connection.

Sends are deduplicated per event, so a retry after a network failure does not post the same message twice into a channel people are reading.

A common starting point: send a text from your product using their own Heymarket inbox and templates. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.

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