Smarty
Zipcodestack
PostalDataPI
Geoco.io
Melissa Data Quality
Loqate
usZIPCodes.org
REST API for US ZIP, ZIP+4, and Canadian postal codes. Single unified endpoint covers address validation and standardization, radius search (centroid haversine and true spatial polygon intersection), point-to-point distance, autocomplete/typeah

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Website, pricing, platforms and company facts side by side.
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ZIP
ZIP Code API
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| Website | zip-codes.com | workspace.google.com |
| Company | Startup from the United States · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America — no separate APIs by country or data type. What it does Address validation and standardization — production-grade parser with ZIP+4 append, refreshed monthly Radius search — centroid haversine and...
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This functional assessment is published by Elixmail. Gmail represents standard email, HubSpot CRM a separate CRM, and Front or Missive a shared inbox. Elixmail capabilities are limited to features currently documented...
Gmail also offers a number of powerful search features that make it easy to find specific emails. For example, you can search for emails by sender, subject, or keyword, and Gmail will return all relevant results.
Google Workspace users can create email addresses with a custom domain, like [email protected], while Gmail users can only make Gmail.com addresses. Google Workspace offers shared drives and more storage space.
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The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.
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