Piler
Secure Email Gateway
Open Source
Free Tier
Self-hosted
E
EnterpriseOpenMSP Score
3833
Reddit Impact Score
Github Score
1M352Stars
52Forks
2KCommits
OtherLicense
Oct 7, 2026Last commit
Alternative Vendors
Commercial Alternatives
Piler is a feature-rich open source email archiving solution that provides a viable alternative to commercial email archiving products. It offers comprehensive email archiving capabilities including legal hold, retention policies, deduplication, digital fingerprinting, and full-text search. Built with a modern microservices architecture, Piler supports deployment on physical servers, VMware, Hyper-V, cloud platforms (AWS, Azure, GCP), and Docker containers. The solution includes a PHP-based GUI with multiple authentication methods (AD/LDAP, SSO, Google OAuth, 2FA, IMAP, POP3) and supports both Google Apps and Office 365 integration. Piler is designed for organizations requiring secure, compliant, and intelligent email archiving with features like ML-powered semantic search, phishing detection, and DLP policies.
Key Features
Multi-Tenancy
Separates tenant data on file, database, and index levels
Email Archiving
Real-time archiving of all inbound emails with automatic retention rules and legal hold capabilities
Semantic Search
ML-powered search that understands meaning and context, not just keywords
ML Phishing Detection
Advanced machine learning models detect phishing attempts with 95%+ accuracy
Legal Hold
Protect critical emails from deletion with audit trails and compliance-ready preservation
End-to-End Encryption
Encrypted email storage with digital fingerprints to verify message integrity
Pros and Cons
Pros
Open Source
Fully open source with GPL-3.0 license providing transparency and community development
No Vendor Lock-In
Export data anytime in standard RFC-2822 EML format
Deployment Flexibility
Deploy anywhere: physical servers, VMware, Hyper-V, AWS, Azure, GCP, or Docker
Modern Architecture
Container-based microservices design with standard open-source components
ML-Enhanced Security
Built-in PII detection, ML-based phishing detection (95%+ accuracy), and DLP policies
Cons
Learning Curve
Requires technical expertise for initial setup and configuration
Community Support
Primary support through GitHub Issues and Discussions rather than dedicated support team
Feature Comparison
Comments
No reviews yet. Be the first to share your experience with Piler.
OpenMSP Score
3833
Reddit Impact Score
Github Score
1M352Stars
52Forks
2KCommits
OtherLicense
Oct 7, 2026Last commit
Frequently Asked Questions
vendor
Getting Started
What is OpenMSP?
OpenMSP is The MSP Knowledge Hub & Community Platform designed specifically for Managed Service Providers seeking to optimize their technology stack, reduce vendor costs, and discover open-source alternatives. We combine a comprehensive vendor directory, open-source solution catalog, and integrated community discussions to help MSPs make informed decisions.
Is OpenMSP really free?
Yes, completely free. Browse vendors and tools, read comparisons, and join community discussions - no cost, no registration required. OpenMSP is community-supported and focused on empowering MSPs to reduce costs and improve operational efficiency through open-source technology.
How does OpenMSP help MSPs reduce costs?
We help MSPs identify cost-effective alternatives to expensive commercial solutions, provide transparent vendor information, and connect you with proven open-source alternatives. Our platform enables MSPs to make informed decisions about their technology investments.
Do I need to create an account to use OpenMSP?
No account required for browsing vendors, reading comparisons, or accessing community content. Creating a free account with SSO (Microsoft, Google, or Slack) allows you to participate in discussions and save your favorite tools.
Platform Information
How does OpenMSP make money?
OpenMSP is currently community-supported. We focus on providing value to the MSP community first. Any future monetization will keep the core platform free for MSPs while maintaining our independence and commitment to unbiased information.
What makes OpenMSP different from other resources?
We focus exclusively on MSP needs with transparent vendor information and open-source alternatives. No vendor partnerships or sponsored listings - just honest, community-driven information to help MSPs make better technology decisions. Our biggest value is our community where MSPs help each other with questions, setup guidance, and sharing real-world experiences.
How is vendor and tool information verified?
Our community of MSP professionals helps verify and update information. We also maintain direct research on tools and vendors to ensure accuracy. Community members can report outdated information, and we work to keep everything current.
Who is behind OpenMSP?
OpenMSP was founded by Michael Assraf, who has extensive experience in the MSP industry and product leadership. As the former CEO & Founder of Vicarius, Michael grew a startup from $0 to $9M ARR with 500+ customers and deep experience working with MSPs, partners, and fundraising. OpenMSP represents his commitment to empowering the MSP community through better technology decisions and cost optimization.
Open-Source Tools & Alternatives
How do you evaluate open-source tool quality?
We assess tools based on active development, community size, documentation quality, production deployments by MSPs, and available support options. Tools must meet strict criteria for reliability and enterprise readiness.
Can I get support for open-source tools?
Many open-source projects offer multiple support options including community forums, commercial support from vendors, professional services, and our community discussions where experienced MSPs share implementation guidance.