Email Migrations

Move Your Email Platform
Without Losing a Single Message.

Email migrations are deceptively complex โ€” shared mailboxes, calendars, contacts, permissions, mobile devices โ€” one wrong step means lost emails, missed meetings, and frustrated teams. We've migrated 50,000+ mailboxes without a single data loss. Your migration will be no different.

50,000+
Mailboxes Migrated
Zero
Email Loss
< 4 hrs
Typical Cutover Window
100%
Data Integrity

Every Email Migration Combination Covered

From legacy on-premises to modern cloud โ€” we've migrated every combination you can imagine.

On-Prem ExchangeMicrosoft 365

The most common migration path โ€” we've done hundreds. Zero email loss, full calendar and contact migration.

Google WorkspaceMicrosoft 365

Full mailbox, Drive, Meet, and Calendar migration with co-existence support during transition.

Microsoft 365Google Workspace

Complete migration to Google's ecosystem with full data preservation and user training.

IMAP / POP3Any Platform

Legacy email systems migrated to modern cloud platforms with full historical email preservation.

AppRiver / RackspaceM365 / Google

Third-party hosted email migrated to your preferred platform with continuity maintained throughout.

Custom Mail ServersAny Platform

Complex custom configurations migrated cleanly, no matter how unusual the source environment.

Our 5-Phase Email Migration Process

Every step is designed to eliminate risk and protect your most critical communication asset.

01

Pre-Migration Assessment

We audit your existing environment โ€” mailbox count, size, shared mailboxes, distribution lists, calendar permissions โ€” and document every element that must migrate.

02

Co-Existence Setup

Dual email flow is established so users on both platforms can send and receive during the migration window, eliminating any blackout period.

03

Data Migration & Sync

Email, calendars, contacts, and tasks are migrated in batches with delta syncs running continuously until cutover.

04

MX Cutover

DNS records are updated in a coordinated cutover window โ€” typically under 60 minutes โ€” with immediate verification of mail flow.

05

Post-Migration Validation

Every mailbox is verified, spam filtering is configured, mobile devices are reconnected, and users receive quick-start training.

โšก Get a free email migration plan โ€” no obligation

Ready to Stop Guessing and Start Growing?

Every day without the right IT strategy costs you in downtime, security risks, and missed opportunities. Our experts are ready to build a custom plan at no cost to you.

Free 30-minute strategy consultation
Response within 24 hours
25+ years of proven expertise

"They operate like an extension of our internal team, anticipating needs instead of reacting to problems. The result has been smoother operations and more time for our advisors to focus on clients."

JF

Justin Farmer

CEO, Exit Wealth Advisors

Sentry Cloud IT

Get Your Free Consultation

Sentry Cloud IT We respond within 24 hours

Our Email Migrations experts will review your situation and provide a custom action plan at no cost.

No spam. Response within 24 hours.