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Top 7 Free Powerful Rest APIs For Marketers

Apilayer API marketplace for finding best free poweful REST APIs

In today’s digital world, marketers need different types of data to run effective marketing campaigns. For example, knowing the location of your website visitors is critical for targeted advertising. Similarly, search engine result page (SERP) data is essential for successful digital marketing. However, collecting such information manually is time-consuming and involves high costs. For this reason, many marketers around the world now use free powerful REST APIs for different purposes. From Google SERP Scraping to email validation, marketers today have several powerful APIs at their disposal.

 In this article, we’ll show you seven powerful APIs from the APILayer API marketplace that you can use for successful digital marketing.

What Are Some Of The Best Free Powerful REST APIs For Marketers?

Here is the free APIs list for marketers:

Ipstack Free Powerful REST API

Ipstack free powerful REST API

Ipstack is a leading free IP to geolocation API. It allows you to find the location of your website visitors based on their IP addresses. IP to geolocation data is valuable for marketers as it helps provide a personalized user experience. For example, you can customize content for users and display relevant product offers based on their country, city, or region. IP to geolocation data is also helpful in redirecting users to web pages translated into their language.

Here are the key features of Ipstack that make it one of the best IP to geolocation API:

Highly Accurate

Getting accurate IP-based location data is crucial for marketing and advertising campaigns. That’s why Ipstack ensures you get highly accurate data of any IP address. The powerful API uses reliable sources, including large ISPs, and covers over 2 million unique locations in 200,000+ cities worldwide.

Real-Time IP To Geolocation Data

Ipstack allows you to get real-time IP-based location data of your website visitors using the standard lookup endpoint. This endpoint allows you to look up single IPv4 or IPv6 addresses. There is also a bulk lookup endpoint that you can use to fetch data of up to 50 IP addresses simultaneously.

Time Zone, Currency, And Security Modules

Ipstack free powerful REST API also comes with three useful modules, namely time zone, currency, and security modules. With the time zone module, you can get the time zone information of your customers based on their location. The currency module allows you to request currency data of the location returned against an IP address. The security module is helpful in accessing threats and risks originating from a particular IP address.

Zenserp Google Search API

Zenserp powerful API for scraping Google SERPs

Zenserp is one of the leading free-to-use APIs for scraping Google SERPs in real-time. SERP data is valuable for marketers as it helps rank websites higher on Google, which in turn increases website traffic and conversion rate. 

Zenserp comes with a free plan that gives you 50 free API requests. Once you’ve consumed your free requests, you can subscribe to a paid plan.

Here are the key features of Zenserp:

Organic And Paid Results

Zenserp API provides accurate organic results for a query, such as the title, URL, destination, description, and position of the post. It is also capable of returning all types of Google ads results.

Image And Video Results

Zenserp can provide all image results for a search query and returns videos as part of the organic results. It also supports image reverse search results. Additionally, zenserp API is capable of providing news and shopping results.

Location-Based Results And Fast Response

Zenserp free powerful REST API also allows you to obtain highly accurate geolocation-based search engine results. The API is powered by a strong infrastructure, which allows it to return results in real-time.

If you want to learn how to use Google search API in Python, this article will be helpful.


marketstack REST API

Marketstack is one of the best free APIs to get worldwide stock market data. The free powerful REST API is capable of providing real-time and historical stock market data in easy-to-understand JSON format.

Here are the key features of marketstack:

Real-Time, Intraday, And Historical Data

With marketstack, you can get accurate real-time, intraday, and end-of-the-day stock market data to know where the market currently stands. Marketstack API can also provide historical market data of 30+ years, which is useful in understanding trends to make informed decisions.

70 Global Exchanges

When you integrate marketstack API in your apps or website, you can make use of over 170,000 worldwide stock tickers. The API covers 70 global exchanges, including NYSE, Nasdaq, and more.

Splits And Dividend Data

The marketstack API has a ‘split’ endpoint that gives you information about the stock splits factor for different symbols. There is also a ‘dividends’ endpoint to look up information about the stock dividend for different symbols.

Disposable Email Detection API

Disposable Email Detection API is a simple yet powerful API that allows you to detect disposable and fake email addresses. When you send promotional emails to fake/disposable IDs, the bounce rate is high while the click-through rate is low. Hence, detecting such email addresses and removing them from your mailing list is essential for successful marketing campaigns.

Here are the key features of Disposable Email Detection API:

Detects Throwaway Email Addresses

In addition to identifying fake and disposable email addresses, the disposable email detection API can also detect throwaway IDs. A throwaway email ID is an ID that a user uses only once or twice, and sending emails to such IDs can negatively impact your marketing campaigns.


The API detects fake email IDs quickly and accurately. It is updated daily and features the most up-to-date database.

Free To Use

The disposable email detection API comes with a free plan that gives you 50 API requests per day. If you want more API requests, you can choose a paid package.

Mailboxlayer Free Powerful REST API

Mailboxlayer - one of the best free powerful REST APIs

If you’re looking for a more advanced email validation API, mailboxlayer is the best choice. The mailboxlayer checks and verifies email IDs at the point of entry into your system.

Here are the key features of mailboxlayer:

  • Real-time email verification
  • Email syntax and typos check
  • Capable of detecting disposable, temporary, throwaway, and catch-all email addresses
  • Bulk email verification
  • Detects role email addresses
  • Capable of separating free email addresses from individual domains

If you want to learn more about how you can use mailboxlayer for effective email marketing, check out this article.

Social Media Assets Generator API

Images are an important part of social media marketing and advertising as they increase user engagement. However, different social media services accept different image sizes, and doing this manually can take a lot of time. This is where you need social media assets generator API. The powerful API resizes and creates images with appropriate sizes for all major social media platforms.

The social media assets generator API free powerful REST API supports the following social media platforms:

  • Instagram
  • Facebook
  • Twitter
  • YouTube
  • Linkedin
  • Pinterest
  • Tumblr and more

Userstack Free Powerful REST API

Userstack - one of the leading free powerful REST APIs

Userstack is another useful free powerful REST API for marketers in the APILayer API market. The userstack API allows you to detect any browser, device, and OS in real-time. When you know the devices and browsers your customers and users are using, you can deliver a better user experience. Marketers can use the userstack API for tailored advertising.

Here are the key features of the userstack API:

Single and Bulk Lookup

The userstack API allows you to look up a single User-Agent string as well as bulk User-Agent strings to accurately detect the device, browser, and operating system information.

Highly Accurate

The API uses a daily updated and constantly monitored User-Agent database to ensure high accuracy.

Easy to use

The userstack free powerful REST API is super easy-to-use, and you can implement it in less than 10 minutes. The API also comes with extensive documentation that explains each API event, method, and endpoint in detail.

Ready to improve your marketing campaigns? Sign up for APILayer free API store today and use your favorite free powerful REST APIs.

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