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ZIP Code API VS Jackmail

Compare ZIP Code API VS Jackmail and see what are their differences

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Contents:
  1. ยป Base Details
  2. ยป Videos
  3. ยป Reviews
  4. ยป Alternatives

ZIP Code API logo ZIP Code API

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

Jackmail logo Jackmail

A newsletter plugin for Wordpress.
  • ZIP Code API Landing page
    Landing page //
    2026-05-21

API for US ZIP, ZIP+4, and Canadian postal code data. One unified endpoint set covers North America โ€” no separate APIs by country or data type.

What it does

  • Address validation and standardization โ€” production-grade parser with ZIP+4 append, refreshed monthly
  • Radius search โ€” centroid haversine and true spatial polygon intersection. Returns ZIPs/FSAs within range, with per-result pct_inside overlap percentage for spatial queries
  • Unified lookup endpoint โ€” accepts US ZIP, ZIP+4, Canadian FSA, full Canadian postal codes, or latitude/longitude inputs
  • Autocomplete/typeahead โ€” cities, counties, metros, states, FSAs, ZIPs
  • Point-to-point distance โ€” between any two postal points
  • Census ACS demographics โ€” 2011โ€“2024, 542 fields per ZIP across income, education, housing, social, and economic profiles
  • Boundary lookups โ€” Census tracts, congressional districts, state legislative areas, school districts โ€” with computed intersection percentages per ZIP

What makes it different

  • Licensed commercial data โ€” not commodity or scraped sources
  • Canadian postal coverage โ€” most peers in this space are US-only
  • True spatial radius โ€” not just centroid haversine
  • 14 years of historical ACS depth via API โ€” unusual outside of raw Census downloads
  • One endpoint for all of North America โ€” no country-detection or input-routing logic to maintain on the client side

Pricing

  • Free โ€” 2,500 lookups/day, no credit card required, no expiry
  • Developer โ€” $49/mo, 100K credits, 300/min
  • Professional โ€” $149/mo, 350K credits, 300/min
  • Business โ€” $499/mo, 1.5M credits, 600/min
  • Credit packs โ€” one-time, from 25K ($19) up to 2M ($799)

Resources

  • Jackmail Landing page
    Landing page //
    2023-03-28

ZIP Code API features and specs

  • Comprehensive ZIP Code Data
    The ZIP Code API from zip-codes.com provides extensive data including ZIP code details, city information, state data, and geographic coordinates, making it a thorough resource for location-based lookups.
  • Multiple Lookup Options
    The API supports various types of lookups including ZIP code to city/state, city/state to ZIP code, distance calculations between ZIP codes, and radius searches, offering flexible querying capabilities.
  • Easy Integration
    The API uses standard REST-based HTTP requests and returns data in commonly used formats like JSON and XML, making it straightforward to integrate into most applications and programming languages.
  • Distance and Radius Calculations
    The API includes built-in functionality for calculating distances between ZIP codes and finding ZIP codes within a specified radius, which is valuable for store locators, shipping estimates, and proximity-based features.
  • Well-Documented Endpoints
    The API provides clear documentation for its various endpoints and parameters, helping developers understand available features and implement them correctly without extensive trial and error.

Jackmail features and specs

  • Integration with WordPress
    Jackmail integrates directly with WordPress, making it convenient for users managing their websites on this platform. It allows you to manage everything from within your WordPress dashboard, streamlining the email marketing process.
  • Automation Features
    Jackmail offers automatic newsletter creation based on WordPress processes, like new posts or product additions. This helps save time for users who regularly publish content.
  • Built-in SMTP Server
    The service includes a built-in SMTP server to ensure high deliverability rates, which can alleviate the need for third-party SMTP services.
  • Drag-and-Drop Editor
    Jackmail has an intuitive drag-and-drop editor, which makes creating emails easy even for users with no technical skills.
  • Analytics and Reporting
    The platform provides comprehensive analytics and reporting tools, allowing users to track the success of their email campaigns with metrics like open rates, click rates, and more.

Possible disadvantages of Jackmail

  • Limited to WordPress Users
    Jackmail is primarily designed for WordPress sites, which limits its use for businesses or individuals using other platforms or needing multi-platform integration.
  • Potential Learning Curve
    Users unfamiliar with WordPress or email marketing tools may experience a learning curve when starting with Jackmail's features.
  • Cost Considerations
    While offering a range of features, Jackmail may have cost considerations depending on the size of your email list and the frequency of campaigns, as it charges based on usage.
  • Dependency on WordPress for Features
    Many of Jackmailโ€™s functionalities are tied to its WordPress integration, potentially reducing flexibility for users who want to switch platforms.
  • Feature Limitations Compared to Dedicated Email Marketing Tools
    Jackmail, while offering convenient integration, might have fewer advanced features compared to standalone email marketing tools like Mailchimp or Constant Contact.

Analysis of ZIP Code API

Overall verdict

  • ZIP Code API from zip-codes.com is a solid, reliable choice for developers and businesses needing accurate US and Canadian postal code data, offering a straightforward RESTful interface with regularly updated databases.

Why this product is good

  • Provides accurate and frequently updated ZIP code, city, state, and geographic data
  • Offers a simple RESTful API that is easy to integrate into web and mobile applications
  • Supports features like ZIP code lookup, radius search, and distance calculations
  • Includes both US ZIP codes and Canadian postal codes for broader coverage
  • Backed by an established data provider with a long track record in postal data

Recommended for

  • Developers building address validation or autofill features
  • E-commerce platforms needing shipping and location-based calculations
  • Businesses performing geographic or radius-based store locators
  • Applications requiring reliable US and Canadian postal data
  • Marketing and logistics teams that need regional or demographic targeting

ZIP Code API videos

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Jackmail videos

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Jackmail WCEU Review

More videos:

  • Review - What is Jackmail, The WordPress Newsletter Plugin?
  • Tutorial - How to create your first newsletter with Jackmail and WordPress?

Category Popularity

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Jackmail

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WordPress Plugins
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User comments

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What are some alternatives?

When comparing ZIP Code API and Jackmail, you can also consider the following products

Smarty - Smarty provides address validation, autocomplete, geocoding and reverse geocoding services covering addresses in over 240+ countries.

Yoast - Yoast offers plugins to improve SEO and optimize web sites and blogs.

Zipcodestack - Free Zip Code API - Free Postal Code Validation | Zipcodestack

Wordfence - Comprehensive security plugin for WordPress.

PostalDataPI - The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

WP Rocket - WP Rocket offers a caching plugin for Wordpress.

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