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MailJawn Documentation

MailJawn is the email marketing platform built for indie mobile developers. Collect subscribers from your app with the Swift SDK, write campaigns in MJML, set up automations, and track what resonates — all without the complexity of enterprise tools.

Get Started

  • Quick Start


    Go from zero to your first sent campaign in minutes.

    Start here

  • Swift SDK


    Add MailJawn to your iOS or macOS app with a few lines of code.

    Install the SDK

  • REST API


    Manage subscribers, drafts, and campaigns programmatically.

    API reference

  • MCP Server


    Let your AI agent draft and send emails through MailJawn.

    Connect your agent

What You Can Do

Collect Subscribers

Add subscribers from your app via the Swift SDK, CSV import, or the REST API. Organize them with tags and segments to target the right people with the right message.

Write and Send Campaigns

Compose emails using MJML, personalize with template variables, and target by tag or segment. Preview and test before sending, then schedule or send immediately.

Automate Your Email

Set up a welcome series to greet new subscribers automatically, or build drip sequences that deliver content over days and weeks. MailJawn handles timing, enrollment, and exit conditions.

Track What Works

See campaign reports with opens, clicks, and bounces. Dive into subscriber activity for individual engagement history. Learn what your metrics mean and how to improve them.

Protect Your Reputation

Configure custom sending domains, understand bounce handling, and stay compliant with email regulations. MailJawn monitors your deliverability health and warns you before problems escalate.

Explore All Sections

Section What's Inside
Quick Start Account setup, app configuration, first campaign
Subscribers Collection, import, tags, segments, custom fields
Campaigns Writing, targeting, previewing, scheduling, UTM tracking
Automations Welcome series, drip sequences, enrollment management
Analytics Campaign reports, subscriber activity, metric guidance
Deliverability Custom domains, bounces, compliance
Integrations Swift SDK, REST API, MCP server, webhooks
Account Authentication, API keys, asset library