Best Email APIs for JavaScript
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Compare the Top Email APIs that integrate with JavaScript as of April 2026
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This a list of Email APIs that integrate with JavaScript. Use the filters on the left to add additional filters for products that have integrations with JavaScript. View the products that work with JavaScript in the table below.
What are Email APIs for JavaScript?
Email APIs allow users to incorporate functionality related to email into their applications. Generally, users can send automated email messages, fetch user data from emails, and store user actions with an API. These APIs are often easy to set up and integrate into a client's application. They also provide a secure layer of encryption between the email server and the application. Compare and read user reviews of the best Email APIs for JavaScript currently available using the table below. This list is updated regularly.
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UniOne
ECOMZ Holding
Up to 5 million outgoing emails per hour. 99.8% of your emails will arrive at their destination. Feel like you might need a dedicated IP? Let us know and we’ll provide one, while also keeping an eye on the performance and stability of our shared IP pools. Get started with Web API or SMTP in minutes. GDPR compliant. No sensitive data to upload, just make a request to send an email and get the statistics back. UniOne has no personal information stored on our servers. Check your email statistics, keep an eye on delivery rates, openings, click-throughs, and unsubscriptions to manage your contacts more effectively. If you find your results are low, UniOne will make a few recommendations as to how to fix this. Running out? The system will let you know when your monthly plan is going to expire. You can also add multiple notification addresses so your IT team will be updated with recent reports or invite your teammates as shared access members to manage the account together.Starting Price: $4/month/6,000 emails
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