Best Transactional Email Products in 2025

Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free

A set of powerful APIs that enable you to send, receive and track email from your app effortlessly whether you use Python, Ruby, PHP, C#, Node.js or Java.

Open Source

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Scale your business email & marketing messages with Amazon Simple Email Service (SES), a cost-effective and reliable cloud email service. Sign up today.

Open Source

Innovative online Email Marketing solution to manage your contacts, create & send your newsletters and track your results. More than 80 000 clients. Best prices and attractive features.

All-in-one email service provider that provides maximum insight and deliverability results for both marketing and transactional emails.

Fast Transactional Email. Independent, privacy-focused, and hosted in the EU

Open Source freemium $10.0 / Monthly (10,000 emails)

Email for developers

AhaSend is a pay-as-you-go Transactional Email Service Provider. Experience fair, transparent pricing and superior delivery with AhaSend.

freemium

MailChimp is the best way to design, send, and share email newsletters.

Postmark is the easiest and most reliable way to be sure your important transactional emails get to the inbox. Simply & reliably parse recieved email to JSON for your webapp.

Open Source

The best way to send transactional emails directly from your code.

freemium

Mandrill is a new way for apps to send transactional email. It runs on the delivery infrastructure that powers MailChimp.

SMTP2GO is the scalable, reliable email deliverability solution. Worldwide servers, a robust API, and powerful reporting set us apart. Try our free plan!