ActiveCampaign
Email marketing and CRM platform for customer experience automation
BillionMail
Self-hosted email marketing and mail server platform
Open-source mail server and email marketing solution for newsletters, campaigns, and transactional emails. Self-hosted with advanced analytics, unlimited sending, and full data control.
Overview
Complete Email Infrastructure for Modern Campaigns
BillionMail is a self-hosted mail server and email marketing platform that gives businesses and developers complete control over their email operations. Built for organizations tired of expensive SaaS platforms and vendor lock-in, it combines a full-featured mail server (Postfix, Dovecot, Rspamd) with campaign management tools for newsletters, promotional emails, and transactional messaging.
Deploy in Minutes, Scale Without Limits
Installation takes approximately 8 minutes via shell script or Docker. The platform includes domain verification workflows, automatic SSL provisioning, and integrated RoundCube webmail. Advanced analytics track delivery rates, opens, and click-throughs while customizable templates streamline campaign creation. Customer management features and list segmentation with tags enable targeted messaging at any scale.
Privacy-First Architecture
As a self-hosted solution, BillionMail ensures your subscriber data and email content remain on your infrastructure. No third-party tracking, no per-email pricing, and no artificial sending limits. The AGPL-3.0 license guarantees transparency and community ownership. Ideal for developers, marketing teams, and organizations requiring email sovereignty alongside professional campaign capabilities.
Highlights
8-minute installation with automated DNS verification and SSL setup
Integrated mail server (Postfix, Dovecot, Rspamd) with RoundCube webmail
Unlimited email sending with advanced analytics and campaign tracking
Self-hosted architecture with customizable templates and list management
Pros
- No per-email costs or artificial sending limits
- Complete data ownership and privacy control on your infrastructure
- Fast deployment via shell script or Docker with management CLI
- Full mail server stack included with webmail interface
Considerations
- Requires server infrastructure and technical expertise to maintain
- Self-hosted setup demands ongoing security and deliverability management
- Smaller ecosystem compared to established commercial platforms
- Responsibility for IP reputation and spam compliance falls on operator
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Fit guide
Great for
- Businesses requiring full control over email infrastructure and subscriber data
- Development teams building applications with transactional and marketing email needs
- Organizations with compliance requirements preventing third-party email services
- High-volume senders seeking to eliminate per-email SaaS pricing
Not ideal when
- Teams without server administration experience or DevOps resources
- Organizations needing immediate enterprise support and SLAs
- Users preferring managed services without infrastructure responsibility
- Small projects where commercial free tiers suffice
How teams use it
SaaS Transactional Email
Application sends password resets, notifications, and receipts through owned infrastructure without per-email fees
Newsletter Publishing
Content creators distribute weekly newsletters to subscriber lists with open rate tracking and template reuse
E-commerce Campaign Management
Online retailers segment customers by tags and send targeted promotions with click-through analytics
Agency Client Email Services
Marketing agencies deploy isolated instances per client with branded domains and campaign reporting
Tech snapshot
Go92%
Shell5%
HTML2%
JavaScript1%
Dockerfile1%
CSS1%
Frequently asked questions
How long does installation actually take?
The installation script completes in approximately 8 minutes from clone to sending your first email, including mail server configuration and web interface setup.
What mail server components are included?
BillionMail integrates Postfix (SMTP), Dovecot (IMAP/POP3), Rspamd (spam filtering), and RoundCube webmail as a complete mail server stack.
Are there limits on email volume?
No artificial limits exist in the software. Actual volume depends on your server resources, IP reputation, and ISP sending policies.
Can I manage multiple domains?
Yes, you can add multiple sending domains with independent DNS verification and SSL certificates through the domain management interface.
What happens to my data?
All subscriber data, email content, and analytics remain on your self-hosted infrastructure with no third-party access or external tracking.
Project at a glance
Active- Stars
- 13,197
- Watchers
- 13,197
- Forks
- 1,324
LicenseAGPL-3.0
Repo age11 months old
Last commit3 weeks ago
Self-hostingSupported
Primary languageGo
Last synced yesterday