18 Free Email API for Developers in JavaScript

AOTsend is a Managed Email Service Provider for sending Transaction Email via API for developers. 99% Delivery, 98% Inbox rate. $0.28 per 1000 emails. Start for free. Pay as you go. Check Top 10 Advantages of Managed Email API

In the modern era of web development, integrating email functionality into applications has become a common requirement. Fortunately, JavaScript developers have access to numerous free email APIs that simplify this process. In this article, we'll explore 18 of the best free email APIs available for JavaScript developers.

1. SendGrid

SendGrid offers a powerful and flexible email API that allows developers to send transactional and marketing emails. With a generous free tier, it's an excellent choice for developers looking to integrate email functionality into their JavaScript applications.

2. Mailgun

Mailgun provides a simple and powerful API for sending, receiving, and tracking emails. Its free tier offers a generous email sending limit, making it a great option for developers.

3. Mailjet

Mailjet's email API offers advanced email marketing and transactional email features. With a user-friendly interface and a free tier, it's a solid choice for JavaScript developers.

【AOTsend Email API】：
AOTsend is a Transactional Email Service API Provider specializing in Managed Email Service. 99% Delivery, 98% Inbox Rate. $0.28 per 1000 Emails.
AOT means Always On Time for email delivery.

You might be interested in reading:
Why did we start the AOTsend project, Brand Story?
What is a Managed Email API, Any Special?
Best 25+ Email Marketing Platforms (Authority,Keywords&Traffic Comparison)
Best 24+ Email Marketing Service (Price, Pros&Cons Comparison)
Email APIs vs SMTP: How they Works, Any Difference?

4. SparkPost

SparkPost's API is designed for high-volume email delivery, with advanced features like real-time analytics and A/B testing. Its free tier makes it accessible for developers on a budget.

5. Mandrill

Although Mandrill has been discontinued as a standalone product and merged into Mailchimp, it still offers a powerful transactional email API as part of the Mailchimp platform. The free tier provides a decent volume of emails for developers to test and use.

6. SendinBlue

SendinBlue's all-in-one marketing platform includes a robust email API. Its free plan offers a good starting point for developers looking to integrate email marketing and transactional emails into their apps.

7. Postmark

Postmark specializes in transactional email delivery, offering a simple and reliable API. Its free tier is suitable for low-volume email sending.

8-18. Other Notable Free Email APIs

In addition to the APIs mentioned above, there are several other notable free email APIs worth mentioning, including:

1. Amazon Simple Email Service (SES)
2. MailChimp's Transactional Email API
3. Elastic Email
4. SendPulse
5. Moosend
6. Emma
7. Constant Contact
8. iContact
9. GetResponse
10. AWeber
11. Campaign Monitor

These APIs offer various features and limits, but all provide free tiers or trial periods that allow developers to test and integrate their services into JavaScript applications.

Conclusion

Integrating email functionality into JavaScript applications has never been easier, thanks to the wide range of free email APIs available. Whether you're looking for transactional email delivery, email marketing, or both, there's an API that fits your needs. With generous free tiers and powerful features, these APIs empower developers to create engaging and interactive email experiences for their users.

AOTsend adopts the decoupled architecture on email service design. Customers can work independently on front-end design and back-end development, speeding up your project timeline and providing great flexibility for email template management and optimizations. Check Top 10 Advantages of Managed Email API. 99% Delivery, 98% Inbox rate. $0.28 per 1000 emails. Start for free. Pay as you go.