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Trusted by 225,000+ businesses
Get your message to the right person at the right time with global infrastructure and industry expertise you can rely on.

Built for developers
We build everything API first with a focus on simplicity and compliance to standards.

Engineered for reliability
We’re serious about our 99.99% uptime SLA, and we’ve got the track record to prove it.

Prepared for questions
Help is here when you need it with free 24/7/365 support for all customers. You’ll feel the love.

Bring your ideas to life and deliver great campaigns with Mailjet
Create stunning emails in minutes with Mailjet’s best-in-class email builder. Easy to use email marketing features like segmentation, pesonaization, and a/b testing help you land right in the inbox and engage the reader. Try Mailjet today for free.

Powerful sending infrastructure
Easy SMTP integration and a simple, RESTful API abstracts away the messy details of sending transactional or bulk email. Scale quickly, whether you need to send 10 or 10 million emails.

Fast, accurate email validation
Know exactly who you should (and shouldn’t) send to. Integrate our real-time email validation API to protect your web forms or drag and drop your contact list to quickly weed out bad emails.

Managed email delivery for high volume senders
Sending millions of emails a month requires an extra level of diligence to achieve and maintain optimal deliverability and performance. Our experts help you get more emails delivered, with a strategy customized to your needs.

Send an email with a few lines of code
Let’s send your first email. Grab the code below in your preferred language and paste it into your terminal.

Fast setup, easy integration
Get up and running today. We have a robust set of APIs and comprehensive documentation so you can spend less time adding email into your app and more time building cool stuff. Here’s what needs to get done:
Activate your account
After you sign up, check your email, click a link, and you’re done.

Set up your domain name
Add a couple DNS records so we know you own the domain you claim to be sending emails from.

Start sending
Deploy the code wherever email fits into your app or plug your SMTP credentials into a tool of your choice.

Full endpoint documentation
Our API reference includes code samples in your favorite language or framework.

Email API for application-driven emails
Send transactional or bulk email effortlessly with our SMTP relay and flexible HTTP API.

Developers and product teams love using Mailgun to communicate with their users
Based on real customer reviews, G2 Crowd named us the #1 transactional email software. Learn how our customers achieved a 1350% increase in sending speed, 817% increase in unique click rate, and other great results.