Directory-to-Phone Sync for Every Organization

Whether you need one‑way, automated updates from Microsoft 365 to employee smartphones, or full two‑way, multi‑directory synchronization across complex environments—CiraSync delivers the industry’s most reliable contact management solutions.

Keep Every Phone Updated, Automatically

Your directory changes constantly. New hires, role changes, updated numbers, and new shared mailboxes. CiraSync ensures that updates reach every user’s Outlook and smartphone without manual effort or IT intervention.

Your teams always have:

  • Accurate phone numbers and caller ID
  • Updated distribution lists and shared mailboxes
  • Consistent contact data across all devices
  • Zero manual updates or user training

Our Products

CiraSync Cloud

Effortless enterprise-grade one-way syncing of Contacts & Calendars across unlimited users, hosted on the Azure cloud

CiraSync On-Prem

All the benefits of CiraSync Cloud, hosted directly on-premises for high security environments

CiraSync Hub

Two-way syncing of Contacts & Calendars, not only across Microsoft environments but across Google, Hubspot, and many other CRM platforms

Choose the Sync Solution That Fits Your Organization

CiraSync Cloud

CiraSync is the fastest, simplest way to push Microsoft 365 and Azure AD contacts directly to employee smartphones. It’s built for organizations that want hands‑off, one‑way sync that “just works.”

  • Daily automated sync from Microsoft 365 to mobile devices
  • Reliable caller ID and up‑to‑date internal contacts
  • No mobile apps, no MDM, and no user action required
  • Enterprise‑grade security with Azure‑based architecture

CiraSync eliminates repetitive IT tasks and ensures every employee has the right contact information. Anywhere. Anytime.

CiraSync On-Prem

Keep contact synchronization fully within your organization’s infrastructure. CiraSync On-Prem allows IT teams to automatically sync contacts from Exchange Global Address Lists (GAL), Public Folders, and other directory sources directly to employee smartphones—while keeping all processing and data inside your network.

  • Complete Data Control
  • Native Exchange Integration
  • Automated Contact Management
  • Enterprise-Grade Security

CiraSync On-Prem provides the same reliable contact synchronization capabilities as cloud deployments while giving organizations complete control over their data, infrastructure, and security.

CiraSync Hub

For complex environments, CiraHub makes sure all connected systems stay in sync with each other, in both directions.

  • Sync contacts between Microsoft 365 tenants
  • Keep CRM contacts (Salesforce, HubSpot, etc.) synced with Outlook
  • Maintain two‑way sync between shared mailboxes, public folders, and mobile devices
  • Unify contact data across distributed teams or acquired companies

CiraHub gives you a centralized hub to clean, merge, and sync contacts across every system your teams rely on.

Security You Can Trust

Built for the most demanding enterprise environments. Your data stays protected with industry-leading security practices.

SOC 2 Compliant

GDPR Ready

Ready to Sync Smarter?

Join 3,000+ enterprises that trust CiraSync for seamless contact and calendar synchronization.