Direct mail on autopilot for ProLine.
Point ProLine's webhooks at Mailr and it goes to work: projects, quotes, and invoices fire postcards into the right neighborhoods within seconds, landing-page leads land in ProLine through Web Leads, and approved quotes stop that home getting mail.
CONNECTED · WEBHOOKS + WEB LEADS
- Jobs inProLine activity fires campaigns automatically
- Mail out1-of-1 cards to the homes that matter
- Leads backCaptured leads write into ProLine instantly
HOW IT CONNECTS
Three steps, and the first one’s the hardest.
01
Connect
No API key needed. Paste Mailr's webhook URL into ProLine → Integrations → API → Webhooks, and your Web Leads URL into Mailr — the wizard shows you both.
02
Confirm
A 3-step confirm-only wizard shows real field samples from your own ProLine account — you see your actual data before anything runs.
03
Run
Reactivation, automations, and Auto Follow-Up are live immediately.


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.
Fire mail off real ProLine activity — 8 native events, each filtered by custom fields: “only won projects over $15k.”
Mailr keeps a running snapshot of every project and contact ProLine sends it, so Reactivation can import your past projects and contacts — by status, or since a date — and mail the nearest neighbors of every one.
Landing-page leads post straight into ProLine's Web Leads at capture time — name, phone, email, address, and message, auto-retried on failure — so they land in your pipeline like any other web lead.
The moment a quote is approved in ProLine, that customer is removed from future mailing audiences. You never pay to advertise to someone you already closed.
- InstantWebhooks fire within seconds; an hourly sweep backstops them
- Attribution window180 days, last touch: the most recent mail to that address gets the credit
- Read-only syncMailr only writes the leads you capture; nothing else is touched
PROLINE TRIGGER EVENTS
Mail that fires itself off ProLine activity.
Instant — ProLine webhooks (a two-minute setup Mailr walks you through) fire within seconds, and an hourly sweep backstops everything, deduped. Nothing missed, nothing doubled. Every event takes custom-field filters like “only won projects over $15k.”
+ custom-field filters on every event

QUESTIONS
The questions ProLine shops ask.
- What do I need to connect ProLine?
- Nothing but your ProLine login. Webhooks and Web Leads are both configured inside ProLine — the Mailr wizard shows you exactly where — so there's no API key to find and no developer involved.
- Which events can fire mail?
- Every project, quote, and invoice event ProLine sends: created, stage changed, won, completed, quote sent or approved, invoice sent or paid — each with custom-field filters on top.
- What does Mailr write back into ProLine?
- Captured leads, through your ProLine Web Leads URL, so they arrive like any other web lead. Everything else is read-only: project, quote, and invoice events power triggers, Reactivation, and revenue attribution.
- How fast do triggers fire?
- Instant — ProLine webhooks fire within seconds of the event. Every event is deduped, so a resend can never double-mail.
THE REST OF THE HAND
Not on ProLine? Yours is here too.
Their Home.
Your Work.
Connect your CRM, pick a neighborhood, and put a 1-of-1 card in every mailbox that matters. First campaign out the door in an afternoon.
No subscriptions · No minimum order size
