MailerBot vs PostGrid Address Verification
MailerBot
mailerbot.com
PostGrid Address Verification
postgrid.comSide by side
| Figure | MailerBot | PostGrid Address Verification |
|---|---|---|
| Price from | $99/mo | $18/mo |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 3 | 6 |
| Spec score · Direct Mail Automation Software | 8.7 (#4) | 7.8 (#11) |
| Spec score · Postcard Maker Software | 8.7 (#4) | 7.8 (#8) |
| Integrations | The integrations page describes an MCP server for Claude, ChatGPT, Cursor, and other MCP-compatible clients, authenticated through OAuth 2.1. | The international service names Salesforce, Stripe, Dynamics 365, Shopify, and Zapier as integrations for address verification workflows. |
| Intended users | The site presents MailerBot for retail, nonprofits, home services, startups, and digital nomads. | The product page describes offerings for developers using APIs and SDKs, operations and data teams using a no-code dashboard, and enterprises needing SLA-backed uptime and dedicated support. |
| Security and compliance | Command lists SSO for Okta, Google, and Microsoft, an available HIPAA BAA, audit logs, and compliance exports. | The product page lists HIPAA, PIPEDA, GDPR, SOC 2 Type 2, and PCI-DSS alongside encryption, audit logs, role-based access control, AWS hosting, single sign-on, third-party penetration testing, and continuous monitoring. |
| Support | Launch includes community and email support with a stated 48-hour response, while Scale adds priority email and chat during business hours. | The international product page advertises native SDKs, free sandbox testing, detailed API documentation, and a 99.9% uptime SLA. |
Plans
PostGrid Address Verification
- Standard Essential$18 a month
- Standard Business$40 a month
- International Essential$70 a month
- Standard Growth$200 a month
- International Business$360 a month
- Standard EnterprisePriced on request
In their own words
MailerBot
MailerBot creates and sends physical postcards, letters, invoices, EDDM and custom print pieces through an API or dashboard. Users can design postcards, write letters in a rich text editor or upload print-ready PDFs. Designs support merge fields, links, QR codes and coupon codes with usage tracking. Contacts can be imported from CSV, checked against addresses and grouped into targeted lists. Campaign analytics track spend, volume and delivery rates, with date filters and report export. The REST API has more than 50 endpoints and supports JWT and API key authentication. Scale adds automated drip sequences, triggered sends and multi-touch flows. MailerBot says it prints, stamps and mails pieces, with delivery-status tracking; Launch includes USPS Intelligent Mail Barcode tracking on each piece. Scale costs $99/month, with letters priced at 69¢ for the first page plus 15¢ per additional page and postcards at 49¢. Command costs $399/month. The site presents the service for retail, nonprofits, home services, startups and digital nomads.
PostGrid Address Verification
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.