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.

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.

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CONNECTED · API KEY

Jobs inBuilder Prime activity fires campaigns automatically
Mail out1-of-1 cards to the homes that matter
Leads backCaptured leads write into Builder Prime instantly

Connected in a few clicks

HOW IT CONNECTS

Three steps, and the first one’s the hardest.

01
Connect
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.
02
Confirm
A 3-step confirm-only wizard shows real field samples from your own Builder Prime account — you see your actual data before anything runs.
03
Run
Reactivation, automations, and Auto Follow-Up are live immediately.

The Connect Builder Prime dialog in the Mailr app, opened from the Builder Prime tile on the connect hub — Step 1 — paste the API key and Mailr checks it against your account before saving.

The Builder Prime quick-setup wizard, step 2 of 3: where the job address lives in Builder Prime, confirmed before anything runs — Step 2 — the job address, read straight from Builder Prime’s own records and confirmed before anything runs.

WHAT FLOWS BOTH WAYS

Deep, not decorative. Four things run on the connection.

Part of Mailr’s 63 native trigger events across 12 CRMs — with revenue synced back so the attribution dashboard can put a dollar figure on every campaign.

Trigger events

Fire mail off real Builder Prime activity — 4 native events, each filtered by custom fields: “only sold projects over $20k.”

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.

Auto 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.

HourlyBuilder Prime has no webhooks, so Mailr sweeps every hour
Attribution window180 days, last touch: the most recent mail to that address gets the credit
View in Builder PrimeEvery lead and deal in Mailr links straight to its record

BUILDER PRIME TRIGGER EVENTS

Mail that fires itself off Builder Prime activity.

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. Every event takes custom-field filters like “only sold projects over $20k.”

Client created→ campaign fired

Client reaches a status→ campaign fired

Project sold→ campaign fired

Project completed→ campaign fired

+ custom-field filters on every event

The automation editor's Builder Prime trigger card: preset chips, the event, an optional filter, and a plain-English recap of what fires — The trigger card in the automation editor — one-click presets, the Builder Prime event, an optional filter, and a plain-English recap of exactly what fires.

QUESTIONS

The questions Builder Prime shops ask.

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.

THE REST OF THE HAND