US based migration architects moving enterprise mail, calendars, archives and applications to Microsoft 365, Exchange Online and other platforms, with coexistence so users keep working.
Our architects have delivered Office 365 and Microsoft 365 migrations, Exchange migrations, tenant to tenant moves, Google Workspace migrations and Lotus Notes and Domino migrations for some of the most complex environments in the world, from 100 to well over 100,000 users.
Our Microsoft 365 Migration experts combine deep platform knowledge with disciplined project and change management to protect user productivity throughout the cutover. We handle coexistence, directory synchronization, authentication, compliance and security so your IT organization can focus on stakeholder management and adoption. Read our Office 365 migration guide and checklist and our guide to Exchange to Office 365 migration.


End to end migrations that go beyond mailbox moves: archives, PST files, journaling, shared mailboxes, public folders, calendars, identities and integrated applications.
Mail, calendars, identities and security moved to Microsoft 365 with planned coexistence and cutover.
On premises Exchange to Exchange Online by cutover, staged or hybrid migration, plus cross forest moves.
Mergers, acquisitions and divestitures between Microsoft 365 tenants, including domains and identities.
Gmail, calendars and contacts moved to Exchange Online with coexistence during the transition.
Notes mail, calendars and mail-in databases moved to Exchange Online, with applications planned separately.
Journals, legacy archives and PST files brought into Microsoft 365 with retention preserved.
Notes and Domino applications retired, rebuilt or moved to new platforms, or modernized in place.
File and collaboration content moved alongside mail when it is part of the program.
As a leading HCL Domino consulting firm and official HCL Business Partner, RockTeam plans and delivers Lotus Notes, IBM Notes and HCL Notes migrations of both mail and applications. See our guide to Lotus Notes to Office 365 migration.
Many organizations move mail while keeping Domino applications. Our HCL Domino consulting and support services keep the remaining environment stable, secure and current.
Our migration methodology is designed for large enterprises that cannot tolerate extended downtime or data loss. We combine rigorous discovery and planning with repeatable technical runbooks, pilot phases and executive level communication plans so stakeholders know exactly what will happen and when.
RockTeam has some of the best collaboration systems experts in the world. We can assist in software selection, implementation, migration, optimization, consulting and even help you manage and monitor your collaboration systems. We also operate L1, 2, and 3 helpdesk services that will seamlessly integrate with your internal operations. If you’re changing platforms, upgrading, moving to the cloud, or even back to on premise, our team can become an extension of your own team and help drive you to a better future.
A successful Office 365 Migration or HCL Notes Migration is just the start of the journey. RockTeam offers ongoing support, managed server services and helpdesk augmentation across Domino, Microsoft 365, Exchange and other collaboration platforms to keep your new environment running optimally.
Assessment, planning, identity and coexistence design, pilot, migration of mailboxes, calendars, archives, shared mailboxes and public folders, cutover, and post migration support. RockTeam also plans the applications and integrations that depend on mail.
It depends on users, data volume, source platform and coexistence needs. Smaller environments can move in weeks; large enterprises usually migrate in planned waves over several months. A pilot gives the most reliable estimate.
Yes. Coexistence routes mail, shares calendar free/busy information and keeps directories in sync, so users on the old and new systems can work together until the last wave moves.
Yes. We migrate journals, legacy archives and PST files into Microsoft 365, preserving retention and legal hold requirements.
On premises Exchange, Microsoft 365 tenants, Google Workspace, Lotus Notes and HCL Domino, and custom or proprietary email systems.
The number of users and mailboxes, total data volume, source and target platforms, archives, shared mailboxes and applications involved, and your timeline. RockTeam offers no cost assessments to get started.
Planning an Office 365 Migration, Microsoft 365 Migration, HCL Notes Migration, Lotus Notes Migration or Exchange Migration and need an enterprise grade Email Migration Service partner? Contact RockTeam to schedule a migration strategy session with our senior architects.