Free SMTP Server - Scalable Email Relay Service with Mailjet
SMTP Configuration - Mailjet

Configure Your SMTP Relay In Minutes

Mailjet's Free SMTP Server integrates easily with any system. You can update your configuration using our SMTP server, one of the supported ports, and simply authenticate with your credentials (API key, secret key).

Mailjet Ports

Benefit From A Variety Of Ports

Mailjet supports a variety of ports with our SMTP relay, offering you greater flexibility. You can choose the port that is most suitable for you depending on your email client or ISP, and have access to either TLS or SSL encryption to ensure your emails are secure.

Inbox placement

Improve Your Inbox Placement

With our SMTP Relay, you will not only increase your chance of landing in the inbox, but we’ll help get your emails there faster. Easily set up SPF, DMARC, and DKIM records to authenticate your domain and start sending. Our deliverability support team will be there every step of the way to help get you set up, monitor, and maintain high deliverability rates.

MTA and framework

Use The MTA And Framework You Prefer

Use your preferred Message Delivery Agent or Message Transfer Agent (MTA) such as Postfix, Exim, or Exchange to send via Mailjet’s SMTP relay. You can also use PHP, Java or any other frameworks or languages you prefer, making it easier for you to start sending immediately.

Statistics

Monitor Your Email Performance

Mailjet’s real-time dashboard makes it easy for you to browse, filter and troubleshoot key performance indicators like opens, clicks, bounces, and unsubscribes, and more. You can also easily integrate in your systems to receive each event notification in real time thanks to webhooks.

Real-Time Monitoring

Receive Alerts For Any Delivery Issues

Real-Time Monitoring is a unique solution developed by Mailjet that analyzes your statistics in real time, and alerts you immediately when a problem is detected. For example, unusual sending volume, open or click rates, and more. You configure your own alert criteria and choose to be notified by email, Slack, or SMS.

Personalization

Personalize Your Emails

Our advanced Templating Language allows you to add more detailed personalization and dynamic content to your emails. Send the right content to each of your recipients to achieve even higher engagement rates.

Servers

Rely On Our Robust And Scalable Infrastructure

Mailjet's robust delivery infrastructure routes billions of emails to the inbox every month. Our auto-scaling mechanism adapts to your volume needs to ensure your emails are sent even in high volume moments. We have more than 720 servers worldwide to guarantee you an uptime of 99.9%.

Support

Get The Help You Need

Our multi-lingual support teams is here to help you 24/7 in English, French, Spanish and German. Get answers to all of your questions to quickly solve any technical issues or improve your deliverability. Our phone and Slack support is available for all Premium users sending 150K or more emails per month.

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Explore Our Full Set Of Features

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