Best 6 Free API Send Email Service Providers

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

When it comes to sending emails programmatically, APIs play a crucial role. They provide a seamless way to integrate email functionality into your applications or websites. In this article, we'll explore the best six free APIs that you can use to send emails.

1. SendGrid API

1. SendGrid API: A Powerful Tool for Email Delivery

SendGrid offers a robust API for sending transactional and marketing emails. With its free plan, you can send up to 100 emails per day. The API is well-documented and easy to integrate, making it a popular choice among developers.

2. Mailgun API

2. Mailgun API: Efficient and Reliable Email Delivery

Mailgun provides a powerful API for sending, receiving, and tracking emails. Its free plan allows you to send up to 10,000 emails per month. The API supports a wide range of features, including advanced email validation, detailed analytics, and flexible tagging options.

【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.

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3. SparkPost API

3. SparkPost API: High-Performance Email Delivery

SparkPost offers a feature-rich API for sending transactional and bulk emails. Its free tier enables you to send up to 15,000 emails per month. The API boasts excellent deliverability rates and provides real-time analytics to help you monitor and optimize your email campaigns.

4. SendinBlue API

4. SendinBlue API: All-in-One Email Marketing Solution

SendinBlue's API offers a comprehensive solution for email marketing and transactional emailing. The free plan allows you to send up to 300 emails per day. In addition to email sending, the API also supports SMS marketing, making it a versatile tool for your communication needs.

5. Mailjet API

5. Mailjet API: Easy-to-Use Email Delivery Service

Mailjet provides a user-friendly API for sending marketing and transactional emails. With its free plan, you can send up to 6,000 emails per month. The API offers advanced features like email templating, real-time tracking, and detailed analytics.

6. Mandrill (Now Mailchimp Transactional)

6. Mandrill (Now Mailchimp Transactional) API: Powerful Transactional Email Service

Although Mandrill has been rebranded as Mailchimp Transactional, it still offers a robust API for sending transactional emails. The free plan allows you to send a limited number of emails per month, with additional emails available at a cost. The API integrates seamlessly with Mailchimp's marketing automation platform, providing a comprehensive solution for your email needs.

In conclusion, these six free APIs offer powerful tools for sending emails programmatically. Whether you're looking for a simple solution for transactional emails or a comprehensive platform for your email marketing campaigns, these APIs have you covered. Choose the one that best fits your requirements and integrate it into your application or website to streamline your email communications.

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.