# Direct mail on autopilot for Builder Prime

> Paste one Builder Prime API key and Mailr goes to work: sold and completed projects fire postcards into the right neighborhoods, landing-page leads land in Builder Prime as clients, and sold projects stop that home getting mail.

*Product · Integrations · Builder Prime · Mailr — getmailr.com*

## How it connects

1. **Connect Builder Prime** — Paste an API key from Builder Prime → Admin → Integrations → Open API — validated live against your account before it saves, so a typo can't half-connect.
2. **Pick trigger events** — Native events like Client created, Client reaches a status, Project sold, Project completed — filterable, e.g. “only sold projects over $20k”.
3. **Approve and mail** — Approve the campaign once; cards print and mail automatically as events fire.

## Reactivation

Mailr imports your completed projects and clients from Builder Prime — or everything modified since a date — then mails the nearest neighbors of every one. The clients source remails your whole book, not just addresses with a finished project.

## Lead delivery

Landing-page leads are created as Builder Prime clients with an opportunity at capture time — deduped by email, auto-retried on failure. Every lead deep-links straight to the client in your Builder Prime account.

## Automatic suppression

The moment a project is sold in Builder Prime — a contracted amount, or a status past Sales — that customer is removed from future mailing audiences. You never pay to advertise to someone you already closed.

## How fast triggers fire

Builder Prime has no outbound webhooks, so Mailr sweeps your account every hour and fires anything new. Every event is deduped, so a re-sweep can never double-mail.

## Common questions

### What do I need to connect Builder Prime?

An API key from Builder Prime → Admin → Integrations → Open API, plus your account's subdomain. Mailr checks it against your account before saving, then a 3-step confirm wizard shows real field samples from your own projects.

### How does Mailr know a project sold?

A contracted amount on the project counts as sold; so does the client's status moving past the Sales stage. Either one books the revenue for attribution and suppresses the home.

### What does Mailr write back into Builder Prime?

Captured leads, as clients with an opportunity. Everything else is read-only: projects and client statuses power triggers, Reactivation, and revenue attribution.

### How fast do triggers fire?

Builder Prime has no outbound webhooks, so Mailr sweeps your account every hour and fires anything new — deduped, so a re-sweep can never double-mail.

[Get Started](https://app.getmailr.com/sign-up) · [Book a Demo](https://getmailr.com/demo)

---

Canonical page: https://getmailr.com/product/integrations/builder-prime
Site guide for agents: https://getmailr.com/llms.txt · Sitemap: https://getmailr.com/sitemap.xml