
Direct mail and address verification APIs for offline communications
PostGrid is an offline communication platform offering REST APIs for direct mail automation (letters, postcards, checks) and address verification across 245+ countries. It helps businesses in healthcare, insurance, finance, real estate, and e-commerce send personalized physical mail at scale and validate addresses with CASS- and SERP-certified accuracy.
Automate sending letters, postcards, checks, and certified mail through a REST API with 2-day SLA.
CASS- and SERP-certified verification, standardization, and parsing for US, Canada, UK, Australia, and 245+ countries.
Real-time address autocompletion to reduce form errors and improve checkout conversion.
Verify up to 200,000 addresses at once via batch upload or API.
HIPAA-compliant mailing workflows for healthcare and insurance use cases.
Variable data printing with HTML templates and merge variables for fully personalized mail pieces.
Track mail status from rendering through USPS delivery with webhook notifications.
Trigger physical letters and postcards from CRM events for onboarding, renewals, or win-back campaigns.
Send HIPAA-compliant patient notices, EOBs, and policy documents at scale via API.
Validate and autocomplete customer addresses on e-commerce checkout to cut failed deliveries.
Cleanse and standardize large customer databases before mailing campaigns or data migrations.
Connect with 1,600+ apps through Zapier without writing code.
Programmatically print and mail business checks for payroll, vendor payments, or refunds.

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