Why us

ESP and CRM integrations

REST API works today. Native integrations with popular ESPs are planned in upcoming releases.

API live
OpenAPI
CSV import/export

REST · POST /api/v1/verify

curl -X POST https://propercheck.pl/api/v1/verify \
  -H "Authorization: Bearer ev_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"email":"user@company.com"}'

Integrations today and tomorrow

REST API with Bearer key works in production. Native Mailchimp, HubSpot, and other ESP connections are on the roadmap — until then CSV and bulk API cover the full workflow.

Some capabilities are in active development. API and bulk are available today.

API available now

POST /api/v1/verify for a single address, POST /api/v1/bulk for lists, GET /api/v1/bulk/:id for status. OpenAPI in docs — generate a client in your stack.

Bearer token from customer dashboard
Same credit model as CSV upload
Rate limits documented in API docs

Planned integrations

Until native integrations launch, use CSV or bulk API. Follow product changelog for sync launch announcements.

Mailchimp
HubSpot
GetResponse
ActiveCampaign
Custom CRM via API

Typical CRM workflow

CRM exports new leads → your middleware calls bulk API → statuses return to CRM as tags or custom fields. Fully automated without a native plugin.

Email verification API Automated verification Clean ESP database

Frequently asked questions

How do I connect my own database?

REST API with a Bearer key. OpenAPI documentation covers verify and bulk.

Do you provide SDKs?

Today: OpenAPI and curl examples. Official SDKs are considered after API v1 stabilizes.