Growmail vs PostGrid Address Verification

Growmail provides print and direct-mail services for businesses sending postcards, brochures, flyers, and letter mailers to selected audiences. Targeting can use neighborhood, ZIP code, route, demographics, income, or interests. Products include Every Door Direct Mail, targeted direct mail, and Discount Zone mailers, with QR-code and call-tracking add-ons for campaign measurement. The Direct Mail Manager API syncs customer data, personalizes postcards, and triggers sends from customer actions. Listed connections include Salesforce, Shopify, Intuit, Capsule, Planning Center, and Zapier; other CRMs can connect through webhooks or API calls. Direct Mail Manager states that it has no batching or minimums and guarantees mailing within 48 hours. Most campaigns are produced and mailed within 5–7 business days after proof approval, and every order includes a digital proof requiring approval. Growmail mails across the continental United States, Hawaii, Alaska, Puerto Rico, and the U.S. Virgin Islands. Pricing is on request, with a New Mover Direct Mail option at $69.95, paid once for a minimum of 100 mailers.

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.