Email marketing platform with campaigns, automations, subscriber management, and real-time analytics. No monthly fees. No subscriber limits. Your data, your rules.
A complete email marketing toolkit built for developers and marketers who want full control.
Create and send beautiful email campaigns with HTML editor, templates, and scheduling. A/B test subjects and content.
Import, segment, and manage unlimited subscribers. Custom fields, tags, and CSV import/export.
Build automated email sequences triggered by events. Welcome series, drip campaigns, and behavioral triggers.
Track opens, clicks, bounces, and unsubscribes in real-time. Detailed campaign reports and subscriber insights.
Create dynamic subscriber segments with powerful condition builder. Target the right audience every time.
Connect Amazon SES, SendGrid, Mailgun, or any SMTP server. Switch providers per brand with zero downtime.
Manage multiple brands from one dashboard. Each brand has its own lists, campaigns, and email provider configuration.
Save and reuse email templates across campaigns. HTML support with variable substitution.
Set up time-based email series. Schedule follow-up emails after subscription with precise delay controls.
Automatic bounce and complaint handling. Global suppression list to protect your sender reputation.
Real-time webhook processing from SES, SendGrid, and Mailgun. Automatic status updates and event tracking.
Redis-powered sending engine with Laravel Horizon. Parallel processing with configurable throughput.
No complex setup. No hidden configuration. Just sign up, configure, and send.
Create your free account, set up your brand, and connect your email provider. Sending in under 10 minutes.
Upload your existing lists via CSV or add subscribers through the API. Create segments and custom fields.
Create campaigns with templates, schedule delivery, and watch real-time analytics as emails go out.
Built with enterprise-grade security from the ground up. Your subscriber data stays on your server, under your control.
Provider credentials and sensitive data encrypted at rest with AES-256.
6 granular roles: master, owner, admin, member, reports_only, campaigns_only.
Strict multi-tenant isolation. Users can only access their organization data.
JWT with auto-refresh, rate limiting (5 req/min auth, 120/min webhooks).
MailStack is 100% free. No premium tiers, no feature gates, no subscriber limits. Every tool available to everyone.
MailStack is built with passion and offered 100% free. No investor funding, no hidden agenda — just a developer building something useful for the community. Your donation helps cover server costs and fuels development of new features.
Stop paying per subscriber. Sign up for MailStack and take control of your email marketing.