Mailjet
Email platform for marketing campaigns and transactional messages with an editor, an API and AI content tools.
Mailjet is an email service for sending both marketing campaigns and transactional messages. Marketers build emails in a drag-and-drop editor, segment contacts and automate workflows, while developers send through Mailjet's REST Email API or SMTP relay. Mailjet also includes AI tools that draft campaigns from a prompt and build audience segments from plain-language descriptions.
Best for Companies whose marketers and developers want to send newsletters, automated flows and transactional email from one shared account.
- Listed in
- EmailDeveloper API
- Platforms
- Web, API, MCP
- Pricing model
- Freemium
- Free plan
- Yes
- API
- Yes
- Made by
- Sinch
- Added
Last verified: . Information taken from mailjet.com.
What is Mailjet?
Mailjet is an email delivery and marketing platform, now part of Sinch, that handles campaigns and transactional messages in the same account. Marketing teams design emails, landing pages and subscription forms in a drag-and-drop editor, comment on templates together and route them through approval before sending. Developers connect through a REST Email API or SMTP relay, with SDKs for languages such as PHP, Python and Node, a sandbox mode and webhooks for event tracking. AI features generate subject lines, copy and layouts from a prompt, rewrite text inside the editor and turn a described audience into segment filters; an MCP server lets Claude Desktop answer questions about campaign results. Other tools cover A/B testing, automation, inbox previews, list validation, sub-accounts and deliverability monitoring. The site cites EU data centres and GDPR compliance.
Key Features
Drag-and-Drop Email Editor
Lets marketing teams design, review and send emails and landing pages without developer help.
Email API and SMTP Relay
Sends marketing and transactional mail from code, with SDKs, a sandbox mode and event webhooks.
AI Email Generator
Produces a draft campaign with subject line, text and layout from a short prompt, ready for editing.
AI Segmentation
Converts an audience described in everyday words into filter logic that can be checked and changed.
Automation and A/B Testing
Triggers workflows from user actions and compares subject lines or content variants.
Collaboration and Sub-Accounts
Provides shared templates, comments, user roles, approval steps and separate accounts for brands or clients.
Screenshots
Use Cases
- Newsletter Sending
- Design a recurring newsletter and send it to a segmented list.
- Transactional Notifications
- Deliver password resets, receipts and account alerts through the API.
- Automated Customer Journeys
- Start a welcome or follow-up series when a subscriber takes an action.
- Agency Client Accounts
- Run several brands from one login while keeping data and permissions apart.
- List Growth
- Collect subscribers with double opt-in forms that feed contact lists directly.
Things to know
- Free plan has a daily limit
- The free tier is capped at 200 emails per day and 1,000 contacts.
- Email credits do not roll over
- Unused monthly emails expire at the end of a billing cycle, and sending beyond the plan limit is billed separately.
- AI content starts at Essential
- AI-assisted content creation appears in the feature list from the Essential plan upward.
- Prices exclude VAT
- Listed prices are shown before VAT; the pricing FAQ says French VAT applies unless stated otherwise.
FAQs
What is Mailjet?
Mailjet is an email platform for creating, sending and tracking marketing and transactional emails.
What is Mailjet used for?
Mailjet is used for newsletters, automated email workflows and application emails such as password resets, sent either from its editor or its API.
Is Mailjet free?
Yes, Mailjet has a free plan. Its pricing page says the plan allows 6,000 emails a month with a 200-per-day cap and needs no credit card.
How much does Mailjet cost?
Mailjet sells Starter, Essential, Premium and Custom plans whose cost depends on monthly email volume. See the official pricing page for current figures in your currency.
Does Mailjet have an API?
Yes. Mailjet provides a REST Email API, an SMTP relay, a Parse API and webhooks.
Does Mailjet have AI features?
Yes. Mailjet lists an AI email generator, an in-editor AI assistant, AI segmentation and an MCP server.
Who makes Mailjet?
Mailjet is a Sinch product; the pricing page is titled Sinch Mailjet.
Who it's for
- Marketers
- Developers
- Small businesses
- Agencies
- Enterprises
Used in these workflows
- How a newsletter issue gets made, and where AI tools helpStage 5: Sending platform
- How a newsletter issue gets made, and where AI tools helpStage 7: Analytics and testing
Each guide lists the stages of one job and the tools that help at each stage. All guides
Comments
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|---|---|---|---|
 NylasDeveloper APIs for email, calendar, scheduling and meeting notes, plus hosted inboxes for AI agents. |
Yes | $15/mo | Yes |
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Yes | — | Yes |
 AImReplyAI email writer that drafts new emails and replies in a chosen language, tone and length, on the web or in Chrome. |
Yes | — | — |
 APIParkUnified gateway for calling, authenticating, billing and monitoring AI models, APIs and MCP services. |
— | — | Yes |
Listed in the same categories as Mailjet. A starting price appears only where we checked it on the maker’s pricing page; a dash means not checked or not published. All Email tools