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Sandesh

The Enterprise Email Platform Built for Control and Compliance

Sandesh is a secure, scalable, and compliance-ready enterprise email platform designed for government, PSU, and enterprise clients. Unlike global SaaS platforms, it offers full sovereignty, reduced costs, and enterprise-class collaboration — without compromising security, availability, or user experience.

Proven Enterprise-Grade Email for Regulated and Critical Sectors

With successful deployments across regulated environments, Sandesh has become the trusted choice for organizations where control and compliance are non-negotiable. Backed by open-source flexibility and Silvereye’s expertise, it scales from hundreds to millions of users, ensuring reliability, security, and long-term sustainability.

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KEY OFFERINGS

Enterprise-Class Email Features That Simplify Communication and Collaboration

End-to-end protection with security-first architecture


  • In-built Firewall, Anti-Spam & Anti-Virus
  • Authentication & Access Controls (LDAP, Active Directory, Role-Based Admin)
  • Email Spoofing Control (SPF, DKIM, DMARC)
  • End-to-End Encryption (SSL/TLS, Secure SMTP/IMAP/POP3)
  • Email Archiving & Compliance Server
  • Country-wise Access Restrictions & Login Activity Tracking

Modern collaboration tools integrated into the email platform


  • AJAX Webmail with Modern UI
  • Unified Address Book (Personal, Shared, LDAP-Integrated)
  • Shared/Global IMAP Folders & Public Folders
  • Calendar, Tasks, Notes (CalDAV/CardDAV Support)
  • Microsoft Outlook & Thunderbird Sync
  • Mobile Webmail & Push Email Support
  • Instant Messaging with Group Chat & File Transfer

Granular control for IT teams and admins


  • Web-Based Admin Panel with Role-Based Delegation
  • Bulk User Management & Multi-Edit Options
  • Spam & Virus Reporting Dashboard
  • Per-User Quotas, Policies & Blacklist/Whitelist
  • Real-Time Reporting & Quota Usage Analytics
  • Customization & Migration Support by Silvereye

Designed to deliver uptime at any scale


  • Clustered & Load-Balanced Architecture
  • Backup MX & Failover Support
  • Scales to Millions of Mailboxes
  • Multi-Tenant & Multi-Domain Support
  • Works Across Red Hat, SUSE, Ubuntu, CentOS, Debian, FreeBSD

Easily integrates with enterprise IT ecosystems


  • Directory Server (Inbuilt LDAP, Active Directory Support)
  • API Integration for Enterprise Apps
  • Unified Communication Extensions (SMS Gateway, Chat, File Transfer)
  • Middleware & ITOM Friendly (Oracle, Red Hat, OpenText)
  • 3rd-Party Client Compatibility (Outlook, Apple Mail, Evolution, etc.)

BUSINESS OUTCOMES

Delivering Tangible Benefits Beyond SaaS Email Platforms

Full Control Over Infrastructure

In-house or private cloud hosting ensures sovereignty and compliance.

Lower Total Cost of Ownership

Save bandwidth & licensing costs compared to global SaaS email providers.

Enterprise-Grade Collaboration

Email, calendar, tasks, and chat integrated in one platform.

Scalability Without Lock-In

Scale from hundreds to millions of users on open-source foundations.

WHY SANDESH

What Makes Sandesh a Trusted Enterprise Email Platform

Sandesh is built for organizations that cannot compromise on control, compliance, or reliability. With enterprise-grade features, real-time admin control, and open-source flexibility, it provides a cost-effective, future-ready alternative to global SaaS email platforms.

  • Data Sovereignty & Full Privacy – On-prem control, ideal for regulated environments.
  • High Availability Clustering – 100% service uptime with failover support.
  • Unified Collaboration – Email, calendar, contacts, tasks, and chat in one platform.
  • Advanced Admin Controls – Real-time dashboards and granular policy management.
  • Enterprise-Grade Security – Built-in antivirus, spam filtering, and access restrictions.

Ready to Take Control of Your Enterprise Email?

Safeguard your communications with Sandesh — the secure, scalable, and compliance-ready
enterprise email platform designed for government and regulated enterprises.

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