EMAIL API

Email API that gets transactional messages to the inbox

Improve inbox placement with guided SPF/DKIM/DMARC setup, reputation safeguards, and real-time delivery signals.

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Join 100,000+ customers around the world who trust Mailjet

Send at scale without compromising reliability

Deliver millions of transactional emails through our email API per hour with predictable performance — from critical alerts to password resets.

Maximize inbox placement, not just send rates

Protect your sender reputation with authenticated sending, deliverability safeguards, and real-time feedback — so transactional emails consistently reach the inbox.

Go live fast with a developer-first Email API

Integrate quickly using a clean REST API, SDKs for common languages, and clear documentation — so you move from prototype to production in days, not weeks.
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Generate an API key and send your first transactional email with inbox-ready setup and real-time tracking.
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Logs and analytics for your email.

SEND YOUR FIRST EMAIL IN MINUTES

Get to the inbox with guided domain authentication

Authenticate your sending domain (SPF/DKIM/DMARC) with clear steps and validation—so critical transactional emails actually land.

Follow our clear documentation for a smooth, step-by-step setup.

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Logs and analytics for your email.

DELIVERY TRACKING

Track every transactional email end-to-end

Monitor delivery events in real time with message logs and webhooks so you can debug failures fast and avoid silent issues in production.

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98% delivery rate at scale

Proven inbox delivery for mission-critical transactional emails

3B+ transactional emails sent daily

Scale confidently as your user base grows.

99.9% uptime

Built to stay up under load for transactional email infrastructure you can trust in production.

Free
 
$0/month
Forever
6,000 emails/month
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Essential
Starting at
$17/month
Billed monthly
15,000 emails/month included
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Premium
Starting at
$27/month
Billed monthly
15,000 emails/month included
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Custom

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Chosen and loved by thousands of brands across the world

At MileIQ, email is an important part of our engagement strategy. On a monthly basis, we are sending about 10M emails, powered by Mailjet. The majority of emails are transactional and lifecycle as the user engages with the service. We were looking for a partner that could offer really solid customer support and service as we figured out how to design this service, and we needed an ESP that would scale with us over time. For me, the key reason to work with Mailjet is we know we have a partner that wants to scale with us as we grow our business and I think that’s really important.
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Ian Andersen Marketing Director – Mobile Data Labs, Inc. (a Microsoft Company)