Assign UPC and EAN barcodes from your own GS1 Company Prefix without leaving Shopify
Stage
Established
Growing
Founded
Not given
Not given
Based in
US
US
Pricing model
usage-based
freemium
Pricing
$12.97 all in for one-page USPS Certified Mail, $15.97 with Electronic Return Receipt (default), $24.21 for Evidence Pack with Certificate of Mailing, $50.10 for Deadline Notice. Includes printing, envelope, and USPS postage. No subscription, membership, or minimum.
Free plan with 20 GTIN assignments. Basic plan at $4.99/month (500 assignments) or $49.99/year. Pro plan at $11.99/month (unlimited assignments) or $110/year.
Key features
prepare_certified_letter tool returns review link, page count, service chosen, and all-in total
quote_certified_letter tool provides read-only exact all-in total for any page count and service
get_certified_letter_status tool returns read-only USPS delivery status and tracking information
USPS Certified Mail and Certified Mail with Electronic Return Receipt services
Postal address validation before payment on review page
Document fingerprint and mailing record kept with SHA-256 hash
Model Context Protocol (MCP) connector over HTTP at https://piloxa.com/mcp
Certificate of Mailing with Evidence Pack including 7 years retention
Deadline Notice with same-day First-Class backup and non-delivery alerts
GTIN Manager Dashboard
Bulk & Auto Assign
Real-Time GS1 Verification
Ready-to-Upload Export Files
Duplicate & Error Detection
GS1 Registry Connection
Existing barcode validation
What makes it different
Document is never rewritten and printed exactly as submitted
Exact document kept alongside SHA-256 fingerprint and mailing record as single unified record
No API key, OAuth, or account required to connect MCP
No manual spreadsheets or portal switching required
Works with your own GS1 Company Prefix, not resold codes
Marketplace rejection prevention before Amazon and Walmart see errors
Direct API integration with major GS1 organizations