Popular email marketing website, mailjet.com, email API, SMTP relay, newsletters, automation, collaboration, AI tools, deliverability, pricing, and WHOIS domain data

Mailjet

Mailjet is a popular email marketing and email API website for teams that need newsletters, transactional email, SMTP relay, automation, collaboration, validation, deliverability tools, analytics, and integrations.

Official site

mailjet.com is the main public website for Mailjet.

Product focus

Mailjet combines email marketing tools for marketers with Email API, SMTP relay, webhooks, and documentation for developers.

Free plan shape

Mailjet's pricing page lists a free plan with 6,000 emails per month, a 200-email daily limit, 1,000 contacts, APIs, SMTP relay, webhooks, and the email editor.

The Mailjet logo from the official Mailjet website.View image on official site

What Mailjet is

Mailjet is an email marketing and email API website at mailjet.com for creating campaigns, sending newsletters, delivering transactional messages, using SMTP relay, tracking events, building forms and landing pages, testing emails, and managing team workflows. The official homepage describes it as email marketing software and an email API for teams, built for developers and marketers.

Marketing and transactional email

Mailjet is designed to handle both campaign email and application-generated email. A marketing team can design newsletters, build segments, run A/B tests, and automate workflows, while developers can integrate a RESTful Email API, SMTP relay, Parse API, and webhooks for notifications, confirmations, receipts, and other transactional messages.

Team collaboration

Mailjet puts unusual emphasis on shared email creation. Its official pages describe real-time co-editing, shared workspaces, role management, approvals, reusable templates, locked sections, linked sections, and team permissions. That is useful for organizations where marketers, designers, developers, legal reviewers, and brand owners all touch email before it is sent.

AI, testing, and optimization

The platform includes AI Email Generator, AI Assistant, AI Segmentation, an MCP Server, A/B testing, email previews, statistics, validation tools, and deliverability services. These features can shorten campaign work and surface performance signals, but they still depend on accurate contact data, clear goals, useful content, and responsible review.

Developer tools

For developers, Mailjet offers an Email API, SMTP relay, SDKs, documentation, sandbox-style testing, event webhooks, Parse API, and integrations with platforms such as WordPress, WooCommerce, HubSpot, Shopify, and Google Cloud. That makes it useful when product email needs to live beside marketing email rather than in a separate sending system.

Who uses Mailjet

Mailjet is aimed at marketers, developers, agencies, small businesses, technology teams, enterprises, franchises, real estate teams, ecommerce stores, publishers, and organizations that need collaborative email work. It is especially relevant when a team wants one account for campaigns, transactional notifications, templates, contacts, analytics, and API-driven sending.

Pricing and plan shape

Mailjet's pricing page uses email volume as a main axis. It lists Free, Starter, Essential, Premium, and Custom plans, with differences in monthly sends, daily limits, contact limits, support, segmentation, AI-assisted content, validations, email previews, automations, landing pages, team management, dedicated IP access, and enterprise deliverability services.

Why it matters

Mailjet matters because email programs often sit between marketing creativity and engineering reliability. A single platform for campaign design, transactional sending, contact management, previews, validation, event tracking, and collaboration can reduce handoffs, but it also concentrates responsibility for consent, deliverability, compliance, and message quality.

Limits and cautions

Mailjet does not make every email welcome or compliant. Teams still need permission-based lists, clean segmentation, unsubscribe handling, privacy review, sender authentication, bounce monitoring, suppression management, accessibility checks, clear ownership of automations, and a plan for mailbox-provider rule changes or deliverability incidents.

WHOIS domain data

Data pulled: May 20, 2026View current WHOIS record

Domain: mailjet.com
IP address: 141.193.213.11
Registrar: OVH sas
WHOIS server: whois.ovh.com
Referral URL: http://www.ovh.com
Created: November 8, 2006
Updated: November 9, 2025
Expires: November 8, 2026
Nameservers: ns1.mljt.tech (35.238.164.182); ns0.mljt.tech (104.199.73.221); ns2.mljt.tech (212.47.237.20)
Domain status: clientDeleteProhibited; clientTransferProhibited
DNSSEC: unsigned
Contact privacy: Registrant, admin, and technical contact details are redacted; contact messages are routed through OVHCloud's registered-domain request form.

Key concepts

Email marketingplanned campaigns such as newsletters, offers, announcements, and lifecycle messages.
Transactional emailmessages triggered by user or system events, such as confirmations and password resets.
SMTP relaya service that sends authenticated email from an application or tool.
Deliverabilitythe work of helping legitimate messages reach inboxes and avoid bounces or spam filtering.

Main tools

Email editor, templates, saved sections, locked sections, and real-time collaboration.
Segmentation, automation, A/B testing, personalization, preference centers, forms, and landing pages.
Email API, SMTP relay, Parse API, Event API, SDKs, and platform integrations.
Email previews, validations, statistics, deliverability services, and dedicated IP options.

Common misconceptions

Mailjet is not only a newsletter sender; it also supports developer-focused transactional email and APIs.
Volume-based pricing does not remove the need to compare features, support levels, validations, previews, and dedicated IP needs.
AI-assisted content still needs brand, legal, accessibility, and consent review before sending.
Real-time collaboration can help teams move faster, but it does not replace clear ownership of final approvals.

Open questions

How will Mailjet keep balancing marketers' visual workflow with developers' API needs?
How will bulk-sender authentication rules reshape onboarding and deliverability support?
How should teams govern AI-generated campaign content across multiple brands or clients?
Which email events should be copied into a company's own analytics stack instead of remaining only in Mailjet?