Mailjoy vs PostGrid Address Verification

Mailjoy is a self-service web and API service for designing, mailing, and tracking personalized postcards and letters. Its drag-and-drop editor provides templates, uploaded artwork, previews, and shareable PDF proofs. Recipient data can personalize mailers, while imported contacts can be organized into lists and segments based on conditions such as location or mailing history. Mailjoy describes recipient-level delivery and conversion tracking, campaign reporting, and conversion notifications. Shopify syncs customer data and supports segmentation from order activity, tags, and other Shopify information. Zapier connects it with more than 5,000 apps, and a REST API is available to Mailjoy Pro customers. The homepage says full-color pieces are mailed within two business days using First Class postage and expected 2–4 business days after mailing. Listed prices include 90¢ per standard postcard, $1.20 per large postcard, and $1.50 per wide postcard or letter, with print, postage, and tracking included.

PostGrid Address Verification checks, autocompletes, standardizes, and enriches addresses for delivery across the U.S., Canada, and 245+ countries and territories. It accepts structured fields, single-line freeform text, or incomplete entries and verifies against postal data in real time. Its international service supports CSV batches of up to one million addresses and can add geographic coordinates with rooftop-level accuracy. It supports non-Latin scripts including Chinese, Arabic, Japanese, and Korean, with conversion to standardized Roman scripts. Named integrations include Salesforce, Stripe, Dynamics 365, Shopify, and Zapier. Options include APIs and SDKs, a no-code dashboard, and self-hosting. Each verification, autocomplete, or standardization request counts as a lookup; monthly plans impose allowances and additional lookup charges beyond them. Standard Essential costs $18 a month billed yearly and includes 2,000 U.S. and Canada lookups monthly, with additional lookups at $0.02 each. Test API keys and 500 free lookup credits are available; a separate bulk verification service page describes 100 free lookups. The product page lists security and compliance provisions including HIPAA, PIPEDA, GDPR, SOC 2 Type 2, and PCI-DSS.