
Postio.co.uk
Ideal postcodes
Fetchify
Smarty
Data8 UK
ZIP Code API
Data8 UK PredictiveAddress
The most affordable postal code API. 240+ countries, sub-5 ms responses. Simple, elegant, transparent.

My Mind
iki.ai
Raindrop.io
recALL
Python Fabric
Puppet
Gist AI
An automatic journal that makes remembering beautiful & fun

Which is more popular?
Website, pricing, platforms and company facts side by side.
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|---|---|---|
| Website | postaldatapi.com | hey.co |
| Pricing | — | |
| Company | Startup from the United States · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


PostalDataPI is a global postal code validation and enrichment API covering 240+ countries and territories. One API, one key, one flat rate — $0.000028 per query with no tiers or subscriptions. What you get back: Up to 18 metadata fields per postal code — city, state/region, coordinates,...
No description of Heyday yet.
What each product offers, as listed by its team.


Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
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Boat Review | Test Drive - 2021 Heyday WT-2DC
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using PostalDataPI and Heyday. For example, how are they different and which one is better?
When comparing PostalDataPI and Heyday, you can also consider the following products.

Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
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All your notes, bookmarks, inspiration, articles, and images in one single, private place, enhanced with artificial intelligence.
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We help businesses improve UX and data quality with a cutting edge address validation service.
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Fetchify delivers fast, accurate address, email, phone and bank validation tools that help businesses capture clean, verified customer data, reduce failed deliveries and improve checkout experiences worldwide.
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All your articles, photos, video & content from web & apps in one place.
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