{"id":88079,"date":"2026-01-28T19:40:45","date_gmt":"2026-01-28T19:40:45","guid":{"rendered":"https:\/\/mailrelay.com\/glossary\/mailjet-what-is-it-pros-cons-and-best-alternative\/"},"modified":"2026-10-07T21:16:14","modified_gmt":"2026-10-07T21:16:14","slug":"mailjet-what-is-it-pros-cons-and-best-alternative","status":"publish","type":"glossary","link":"https:\/\/mailrelay.com\/en\/glossary\/mailjet-what-is-it-pros-cons-and-best-alternative\/","title":{"rendered":"Mailjet"},"content":{"rendered":"\n

Mailjet is a French email marketing and transactional email platform, founded in 2010 and owned by the Swedish group Sinch since 2021.<\/p>\n\n

It is a well-known tool among developers and agencies. Its strengths are its API for sending emails from a website or an app and team editing of campaigns.<\/p>\n\n

But its free plan has limits that you should be aware of. Let’s look at what it offers, how much it costs in 2026 and when another option suits you better, such as Mailrelay, which lets you send 80,000 emails a month without paying.<\/p>\n\n

What is Mailjet and what is it for?<\/h2>\n\n

It was founded in Paris by Wilfried Durand and Julien Tartarin. In 2019 it joined Mailgun, another email sending company, under the Pathwire group.<\/p>\n\n

In December 2021, the Swedish communications company Sinch bought Pathwire for 1.9 billion dollars. Since then, the tool has been branded as Sinch Mailjet.<\/p>\n\n

It is used for two things.<\/p>\n\n

On the one hand, for email marketing: designing a newsletter<\/a>, sending it to your list and measuring the results.<\/p>\n\n

On the other, for sending transactional emails<\/a>, such as order confirmations or password notifications, through its API<\/a> or via SMTP<\/a>.<\/p>\n\n

What is the difference between Mailjet and Mailgun?<\/h2>\n\n

Both belong to Sinch, but they target different audiences. Mailgun is designed for developers: it is a sending API with no visual editor for campaigns.<\/p>\n\n

Mailjet combines both. It has an API and SMTP for transactional emails, as well as a drag-and-drop editor so the marketing team can create its newsletters without coding.<\/p>\n\n

From Mailgun it inherits, for example, list validation, which detects addresses that don’t exist before you send.<\/p>\n\n

How do transactional emails work in Mailjet?<\/h2>\n\n

A transactional email is one that is sent automatically when someone does something on your website: a purchase, a sign-up or a password reset request. It is sent to a single person and has to arrive within seconds.<\/p>\n\n

With Mailjet you can send them in two ways. The first is to connect your website or store to its SMTP server, which usually just requires setting up a username and password. The second is to use its API, which gives you more control and lets you create templates with variables.<\/p>\n\n

It is a good idea to keep these emails separate from your marketing campaigns. If a newsletter gets a lot of spam<\/a> complaints, you don’t want that to damage your sender reputation<\/a> or affect your invoices or order confirmations.<\/p>\n\n

What features does Mailjet have?<\/h2>\n\n

The platform brings together the basics for sending campaigns and automated emails. These are its main functions:<\/p>\n\n