Community
Free
Self-hosted, forever.
- Up to 5 devices
- Microsoft 365 (Graph) delivery
- Full security feature set
- STARTTLS, per-device firewall rules
- Community support
Pro
Pro
- Unlimited devices
- Groups & delegated admin (group admins, auditors)
- Alternative delivery: SendGrid, Mailgun, Postmark, SES, any SMTP
- Audit-log export
- Automatic license renewal + outage monitoring
- Priority support