Integrations
Learn about Integrations in LettrLabs
AccuLynx
Sync AccuLynx jobs and contacts to trigger direct mail for roofing and contractor workflows.
Call Tracking Metrics
Pull call-tracking data to inform and trigger direct mail campaigns tied to phone conversions.
CSV Upload
Upload a CSV of recipients to launch a one-time or recurring mail campaign without a live integration.
HailTrace
Target homeowners impacted by hail and severe weather with automated storm-response mail.
Klaviyo
Sync Klaviyo segments to trigger handwritten and printed direct mail alongside your email and SMS flows.
Lead Reveal
Identify anonymous website visitors and turn them into mailable leads.
Open API / Webhooks
Trigger mail sends and upload recipient data directly from your own systems using LettrLabs' API and webhooks.
- Setup Guide: Open API & WebhooksHow to generate an Open API key and set up inbound webhooks to trigger mail or attribution from your own systems.
- Inbound Webhook Reference (Payload & Field Guide)Technical reference for developers: request format, authentication, response codes, and field shapes for each webhook action type.
- Adding a duplicate recipient to an integration orderPOST /v1/integration-orders/{id}/recipients now returns HTTP 200 for an exact duplicate recipient. DUPLICATE_RECIPIENT left the 422 reason-code list.
Salesforce
Connect Salesforce CRM data (work orders, locations, service territories) to drive direct mail campaigns.
- Setup Guide: SalesforceHow to create a Salesforce External Client App and connect it to LettrLabs (verified against a real walkthrough) to trigger mail from CRM data.
- Salesforce Best Practices: Work-Order-Triggered MailHow to build a mail automation triggered off completed Salesforce Work Orders — filters, address handling, and what to watch for.
ServiceTitan
Pull jobs, appointments, and memberships from ServiceTitan to launch targeted mail campaigns automatically.
- Setup Guide: ServiceTitanHow to connect ServiceTitan to LettrLabs (verified against a real walkthrough) and trigger mail from job/membership data.
- ServiceTitan Best Practices: Job-Completion CampaignsUse cases for job-completion, membership, and invoice-triggered ServiceTitan campaigns.
- Filter a ServiceTitan audience by Customer TypeSend a ServiceTitan automation to residential customers only, or to commercial customers only, with the Customer Type filter.
Shopify
Connect your Shopify store to trigger direct mail automations from orders, segments, and customer activity.
Webhook-based Integrations
Integrations powered via Webhooks
- Housecall ProHousecall Pro via Webhook integration2 articles
- HubspotHubspot via Webhook integration3 articles
- JobNimbusJobNimbus via Webhook integration3 articles
- RoofLinkRoofLink via Webhook integration1 article
- Zoho CRMZoho CRM via Webhook integration2 articles
- Monday.commonday.com via Webhook integration2 articles
- Improveit360Improve360 via Webhook integration1 article
- GoHighLevelGoHighLevel via Webhook integration2 articles
- PipedrivePipedrive via Webhook integration2 articles
- Fundraise UpFundraise Up via Webhooks integration2 articles
- Aspire (ServiceTitan)Aspire via Webhook integration1 article
- WeGiveWeGive via Webhook integration2 articles
Zapier
Connect LettrLabs to thousands of apps via Zapier to trigger mail sends from any workflow.