Every industry, every use case — where U.S. mailing-list and intent data moves the needle.
Three pillars, dozens of pages, one library. Tech covers the API, MCP Server, DataWidget®, and how each integrates into your stack. Industries goes deep on the verticals where LeadsPlease® data drives the most ROI — real estate, insurance, mortgage, solar, mass tort, B2B SaaS. Applied walks through the playbooks — direct-mail campaigns, AI sales agents, intent-data targeting, list aggregation, recurring lead feeds. Find your fit; copy the playbook; ship faster.
Tech
The surface you build on. Data API, MCP Server for AI agents, DataWidget® embeddable list builder, and pre-built integrations into your CRM / ESP / direct-mail stack.
Industries
Where LP data drives the strongest ROI. Real estate, insurance + Medicare, mortgage refi, solar, legal / mass tort, B2B SaaS, automotive, healthcare. Each gets a dedicated playbook.
Applied
The how-to playbooks. Direct-mail campaign templates, AI sales-agent recipes, intent-data targeting, list aggregation patterns, T65 / Medicare AEP timing, recurring lead drops.
1. Tech — the surface you build on
Four ways to plug LeadsPlease® data into your application or workflow. Pick the one that matches how your team works — or combine them; they all share the same underlying database.
REST/JSON Data API
Bearer-token auth, OpenAPI 3.0, polygon + radial + ZIP geos, 30+ demographics. Build mailing-list features into your own product. No order minimum.
Plug into Claude, Cursor & ChatGPT
Model Context Protocol server — connects 250M+ U.S. consumers and 18M+ businesses to AI agents in 30 seconds. Five tools: count, preview, order, fulfil, describe.
Embeddable list builder · for W2P
Patented three-panel widget: AI chat assistant, interactive Leaflet map, demographic filters. Drop into your postcard / EDDM / direct-mail platform — $1K one-time setup, 20% margin on every list automatically.
Scored 1–100% in-market households
Consumer + B2B intent signals scored 1–100% (percentile) against the LeadsPlease® household graph. 6,929 B2C signals across 25 categories · 34,872 B2B topics. Marketing-ready files with full demographics — not pixels. Available via Data API, MCP, DataWidget®, or flat-file. Marketing use only.
Auto-pilot recurring lead feeds — the killer pattern
Define audience criteria once, get matching new records pushed in near-real-time as their intent fires. Each delivery is incremental, deduplicated. Powers Intent Data, New Homeowner, New Mover, and T65 drops.
Direct-mail platforms, ESPs, CRMs
Pre-built connectors into postcard tools, email platforms, and CRMs. Roadmap targets: Lob, Postalytics, PostGrid, HubSpot, Salesforce. Email tech@leadsplease.com to flag your priority connector.
Roadmap · email to voteNode, Python, Go libraries
Idiomatic SDKs that wrap the REST API with auth handling, retry logic, and TypeScript types. Today the API is small enough that fetch + 5 calls works fine; SDK roadmap is demand-driven. Email to flag your language.
2. Industries — where LP data drives the strongest ROI
Eight verticals where LeadsPlease® data routinely 5–10× the response rate of generic prospect lists. Each page below covers the buyer profile, the recommended LP product mix, the math, and a step-by-step playbook with sample API calls.
Farming, listings, just-sold
New Homeowner + New Mover daily feeds + radius / ZIP / polygon farming. Intent-data overlay catches the homeowners actively shopping for a refi or remodel.
Medicare turning 65 mailing list, T65 IEP, AEP
T65 birthday-cohort filtering for the 7-month IEP, Annual Enrollment Period (Oct–Dec) timing, daily Subscriptions feed, and Intent Data overlay for in-market shoppers. The full Medicare Advantage / Med Supp playbook.
Rate-window homeowners + intent
Homeowners with mortgages above market rate + intent-flagged refi shoppers. Subscriptions push hot leads in near-real-time as their intent fires. Mortgage-protection insurance vertical detail on the Intent Data microsite.
Homeowners with high electric usage
Single-family homeowners + Utilities + Home Improvement intent + sun-belt geography. Subscriptions deliver door-canvasser routes the next morning. LP solar leads page.
Claimant prospect pools by demo + geo
Demographic + geographic targeting for mass-tort and class-action claimant outreach. Radial search around medical facilities, age + gender + diagnosis-proxy filters via the LP targeted mailing list builder.
SIC + intent for outbound + ABM
Verified business contacts by SIC / NAICS + employee count + sales volume + executive title, plus 34,872 B2B intent topics catching CRM-evaluating accounts. Subscriptions push P75+ accounts to your SDR queue immediately.
Auto-in-market intent + lease-end
Top-decile auto-shoppers (P90+) + lease-end timing + radius around the dealership. 320 foreign-brand signals, 113 truck, 111 SUV, 26 EV/hybrid. LP auto dealer lists.
Physician contacts + patient outreach
SIC-coded physician email + mailing lists (~1.4M HCPs) and consumer outreach by condition-proxy demographic for clinic/practice acquisition.
3. Applied — the playbooks that ship results
Use-case playbooks that cut across industries. Each one shows the LP product mix, the criteria object, the cadence, the deliverability tactics, and the typical conversion math.
Direct-mail campaign playbook
Picking the right list type, sizing the drop, USPS CASS, multi-touch cadence, deliverability monitoring, response tracking. Sample criteria objects + worked examples.
Best mailing list companies of 2026
Honest comparison of LeadsPlease®, Data Axle, Melissa, Experian, BB Direct, Salesgenie, DirectMail.com, USPS EDDM. Per-record pricing, order minimums, USPS CASS, API + Intent Data availability. Where each provider genuinely wins.
Build a Claude/ChatGPT prospecting agent
Plug the LeadsPlease® MCP Server into Claude Desktop, Cursor, ChatGPT, Windsurf, or n8n. Five tools: count_audience, preview_audience, describe_filters, order_list, fulfil_list. The first MCP server for mailing lists, direct mail, and B2B prospecting.
Top-decile in-market overlays (P75+, P90+)
Layer LeadsPlease® Intent Data percentile filters on demographic audiences. 6,929 B2C signals across 25 categories + 34,872 B2B topics, scored 1–100% (percentile). Worked examples for auto, kitchen-remodel, insurance-shopping, mortgage-refi, switching-cell.
Merge 10 lists into one CSV
The industry-first List Aggregation API on the LeadsPlease® Data API. Insurance-carrier worked example: 10 demographic micro-segments per ZIP, deduplicated, in 60 seconds. No other U.S. mailing-list API offers this.
Birthday-window outreach playbook
The full Medicare turning 65 mailing list playbook: 7-month IEP, AEP timing, daily Subscriptions delivery, multi-touch cadence, CMS-compliant copy guidance.
Auto-pilot Subscriptions delivery
Define audience criteria once. Get hot leads pushed in near-real-time as their intent fires. Each delivery is incremental, deduplicated, never the same household twice. The killer pattern for direct-mail and outbound teams.
Don't see your industry or use case?
We've shipped pages for the eight most common verticals to start. If your fit is more specialised — political, non-profit, education, hospitality, retail — tell us and we'll prioritise it.