Enterprise email infrastructure with 99.9% uptime
EPC Group provides Exchange Server consulting and migration to Exchange Online (Microsoft 365). We handle on-premises Exchange administration, hybrid deployments, tenant-to-tenant migrations, and 24/7 emergency support. Exchange Server 2019 reached end-of-life in October 2025 — contact us to plan your migration.
Enterprise-grade email migration and Exchange consulting backed by 29 years of Microsoft expertise. From on-premises Exchange to hybrid and full cloud deployments with minimal-disruption migration.
Complete email infrastructure services from assessment to migration to ongoing management
Full migration from on-premises Exchange Server to Exchange Online with zero data loss and minimal user disruption.
Maintain on-premises Exchange while leveraging cloud capabilities. Ideal for compliance requirements and phased migrations.
Enterprise email protection with advanced threat detection, DLP, and compliance configurations for regulated industries.
Migrate from Gmail, Lotus Notes, GroupWise, Zimbra, and other email platforms to Microsoft 365.
Legal hold, compliance archiving, and eDiscovery solutions for regulatory requirements and litigation support.
Ongoing Exchange management, monitoring, troubleshooting, and optimization services.
With 29 years of Microsoft expertise and thousands of successful email migrations, EPC Group delivers enterprise-grade Exchange solutions that minimize risk and maximize productivity.
Users continue working while we migrate their mailboxes in the background
All email, calendars, contacts, and permissions migrated without data loss
HIPAA, SOC 2, FedRAMP, and GDPR compliance configurations
Predictable costs with no hidden fees or scope creep
HIPAA-compliant email migration with encryption, BAA configuration, and PHI protection policies.
SOC 2 compliant email infrastructure with advanced security, archiving, and regulatory retention.
FedRAMP-aligned consulting expertise Exchange Online with GCC/GCC High configurations for federal agencies.
Migration timelines vary by organization size and complexity. Small organizations (under 500 users) typically complete in 2-4 weeks. Mid-size (500-5,000 users) takes 1-3 months. Enterprise migrations (5,000+ users) require 3-6 months with phased rollouts to minimize disruption.
Yes, hybrid Exchange deployments allow you to maintain on-premises Exchange servers while using Exchange Online. This provides flexibility for compliance requirements, gradual migration, and specific workloads that must remain on-premises.
All email, calendar, contacts, and archive data are migrated with full fidelity. We use Microsoft-native tools and proven methodologies to ensure zero data loss. Users maintain continuous email access throughout the migration process.
Yes, Exchange Online (Microsoft 365) is HIPAA compliant when properly configured with a Business Associate Agreement (BAA). EPC Group specializes in healthcare compliance and ensures proper encryption, DLP policies, and audit logging are configured.
Exchange Online Plan 1 starts at $4/user/month. Exchange Online Plan 2 with archiving and eDiscovery is $8/user/month. Most enterprises choose Microsoft 365 E3 ($36/user/month) or E5 ($57/user/month) for complete productivity suites.
Get a free Exchange migration assessment. Our experts will analyze your current environment and provide a detailed migration roadmap.
EPC Group provides Exchange Server consulting and migration to Exchange Online (Microsoft 365). We handle on-premises Exchange administration, hybrid deployments, tenant-to-tenant migrations, and 24/7 emergency support. Exchange Server 2019 reached end-of-life in October 2025 — contact us to plan your migration.
EPC Group covers the full Exchange Server and Exchange Online lifecycle.
The right migration approach depends on your mailbox count and business requirements.
| Approach | Best for | Timeline | |---|---|---| | Cutover | Under 150 mailboxes | 1–2 weeks | | Staged | 150–2,000 mailboxes | 4–8 weeks | | Hybrid | 2,000+ mailboxes | 8–16 weeks | | Tenant-to-tenant | M&A, divestiture | 4–12 weeks |Exchange Server 2019 is end-of-life as of October 2025. Running an unpatched mail server creates security and compliance risk.
Yes. Exchange Server 2019 reached end-of-life in October 2025. Microsoft no longer releases security updates. Organizations running Exchange Server 2019 on-premises after that date are unpatched and exposed to security vulnerabilities.
EPC Group has migrated 3.7 million+ mailboxes from on-premises Exchange to Microsoft 365 and between Microsoft 365 tenants — across cutover, staged, hybrid, and tenant-to-tenant migration scenarios.
A hybrid Exchange deployment runs on-premises Exchange and Exchange Online simultaneously. Users appear in a single Global Address List. Mail routes correctly between both environments. It is the preferred approach for large enterprises migrating in phases over months.
Yes. EPC Group configures Exchange Online with a signed Microsoft BAA, DLP policies for PHI detection, sensitivity labels, retention holds, and audit logging — meeting HIPAA Security Rule requirements for electronic protected health information in email.
Talk to an EPC Group Exchange architect. Call (888) 381-9725 or request a 30-minute discovery call.