Mailjet

Mailjet is an email platform that brings together a campaign editor, contact management and transactional sending through an API and SMTP relay, for marketing communication and system-generated messages.

On the marketing side, the drag-and-drop editor has a template gallery, and the team can edit together, comment and track changes. Contacts come in through CSV or API, with custom properties that serve as the basis for segmentation, and signup forms feed the lists.

On the technical side, the send API and the SMTP relay handle transactional messages, with SDKs for PHP, Python and Node and a sandbox mode. Open, click, bounce and block events arrive through a webhook.

The vendor's pages also use the name Sinch Mailjet. The audience is marketing and digital communication teams that want campaigns and API sending in the same account.

Mailjet has a Free plan and three paid plans, with list prices in US dollars per month: Starter at $9, Essential at $19 and Premium at $29.

• Free: $0, with 6,000 emails per month, a limit of 200 per day and 1,000 contacts.
• Starter: $9 per month, with 8,000 emails per month and no daily limit. Overage is billed at the same rate as the 15,000-email Essential.
• Essential: $19 per month, with 15,000 emails per month and unlimited contacts.
• Premium: $29 per month, with 15,000 emails per month. Account sharing exists only on Premium and the Custom plan. Premium is also offered in larger tiers, from 50,000 to 500,000 emails per month.

The vendor published a pricing update notice effective September 9, 2026, and Starter kept its price. An earlier version of the page showed Essential at $17 and Premium at $27. Annual billing carries a 10% discount, and the table shows the monthly equivalent.

List prices published by the vendor, checked in October 2026. Through Nexforce Marketplace, Mailjet can be purchased in Brazilian reais, with a Brazilian tax invoice.

The main features of Mailjet are the email editor with collaboration, contact management, the send API with SMTP relay, the event webhook and Magic Lists.

• Editor: drag and drop, with a template gallery, comments and change tracking. Reusable templates serve marketing, transactional and automation emails.
• Contacts: import through CSV or API, custom properties for personalization and segmentation, and signup forms connected directly to the lists.
• Sending: the Send API and the SMTP relay, with SDKs for PHP, Python and Node and a sandbox mode for testing.
• Events: the Event API sends opens, clicks, bounces and blocks to a webhook endpoint.
• Magic Lists: an email sent by SMTP or API to a list address reaches all contacts on it.
• Team: account sharing uses roles and permissions, and exists only on the Premium and Custom plans.

Volume and contact limits change by plan: Free has 1,000 contacts, and unlimited contacts start at Essential.

Mailjet is worth it for teams that want campaigns and transactional sending in the same account, with a low entry price; it is worth less for those who need many users on the entry plans.

Pros:

• The Free plan gives 6,000 emails per month, with a limit of 200 per day.
• Essential costs $19 per month and brings unlimited contacts.
• The Send API and the SMTP relay have SDKs for PHP, Python and Node and a sandbox mode.
• Magic Lists let you send one email by SMTP or API to a list address and reach all contacts.
• The editor allows editing together, commenting and tracking changes.

Cons:

• Free and Starter have a contact cap, and unlimited only starts at Essential.
• Account sharing exists only on Premium and Custom.
• Starter has 8,000 emails per month, and overage is billed at the Essential rate.
• Prices changed: Essential and Premium were $17 and $27 on an earlier version of the page, and the vendor announced an update for September 9, 2026.

The main alternatives to Mailjet are Brevo, SendGrid, Active Campaign and MailerSend, and the difference is whether you want CRM and other channels, API-only delivery or marketing automation.

• Brevo: brings together campaigns, automation, transactional messages, SMS, WhatsApp and CRM, with a CRM and WhatsApp layer that Mailjet does not have. Its Free plan limits sending to 300 emails per day.
• SendGrid: Twilio's email API, aimed at developers who need transactional delivery at scale; it is less suited to building visual campaigns.
• Active Campaign: concentrates on marketing and sales automation, with pricing tiered by number of contacts.
• MailerSend: focuses on transactional email through API and SMTP, with a Free plan of 500 emails per month, rather than marketing campaigns.

Compare with the same monthly volume and the same contact list, because Mailjet's price varies by email volume and some alternatives price by number of contacts.