
Thunderbird
eM Client
Microsoft Outlook
Postbox
Spark Mail
Apple Mail
Airmail
Mailbird is the best email client for Windows 7, 8 and 10

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.

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


No description of Mailbird yet.
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,...
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
Mailbird is recommended for users who need to manage multiple email accounts, value a customizable and intuitive interface, and wish to integrate their email with other productivity tools. It is particularly suitable for small to medium-sized businesses, freelancers, and individuals looking for a streamlined email management solution.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Mailbird Review: 5 reasons You'll love Mailbird Email Client for Windows
More videos
PostalDataPI Now Returns 18 Fields Per Postal Code — for 240+ Countries
More videos
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Mailbird and PostalDataPI. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


If you're looking for alternatives to Outlook for Windows and want a unified email solution that easily integrates with your communication and other tools, Mailbird can be a great option. However, unlike Outlook, it...
Mailbird is an email client for Windows. It has a free version that you can use with a single email account and paid plans for personal and business use.
Mailbird is a Windows email sending application that can work with Gmail. It helps you to manage all your mails and contacts from more than one account. This app allows you to customize your layout.
We have no reviews of PostalDataPI yet. Be the first one to post
When comparing Mailbird and PostalDataPI, you can also consider the following products.

Thunderbird is a free email application that's easy to set up and customize - and it's loaded with great features!
Compare Thunderbird to Mailbird or PostalDataPI:

Fast UK address, email & phone validation APIs for developers. Official Royal Mail PAF data. Pay as you go, 100 free lookups.
Compare Postio.co.uk to Mailbird or PostalDataPI:

eM Client is a fully-featured email client for Windows and macOS with a clean and easy-to-use interface. eM Client also offers features for calendars, tasks, contacts, notes, and chat.
Compare eM Client to Mailbird or PostalDataPI:

We help businesses improve UX and data quality with a cutting edge address validation service.
Compare Ideal postcodes to Mailbird or PostalDataPI:

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.
Compare Microsoft Outlook to Mailbird or PostalDataPI:

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.
Compare Fetchify to Mailbird or PostalDataPI: