Move email deliberately. Keep the business connected.
We plan and manage Exchange Online, on-premises Exchange, and hybrid transitions—then secure mail flow, access, and retention around the way your organization works.
What we deliver
Each capability can be delivered on its own or connected to the rest of your operation.
Migration planning
Inventory mailboxes, identity, mail flow, applications, and records needs before choosing a migration path.
Pilot and cutover
Test representative users and systems, move in planned batches, and verify delivery and access after cutover.
Mail security
Review administrator access, authentication, anti-phishing controls, and SPF, DKIM, and DMARC.
Retention and holds
Translate approved records rules into technical policies, then test access, preservation, and offboarding behavior.
Choose the destination before choosing the migration tool
Exchange Online is the cloud mailbox service in Microsoft 365. Exchange Server Subscription Edition (SE) is the supported on-premises path for organizations that still need local Exchange servers. A hybrid deployment connects on-premises Exchange with Exchange Online during a move or for longer coexistence. The right route depends on mailbox count and size, directory identity, applications that send mail, retention requirements, and the amount of coexistence the business needs.
Microsoft says support for Exchange Server 2016 and 2019 ended in October 2025. We assess what is actually running before planning a move; a version label alone does not tell us whether a server, connector, or application can be removed safely. Microsoft's supportability matrix is the current reference for supported Exchange Server configurations.
What a migration plan includes
Inventory: mailboxes, shared mailboxes, delegates, calendars, distribution groups, archives, mobile clients, applications, devices, and third-party senders.
Identity and access: directory synchronization or cloud-only accounts, administrator roles, multifactor authentication, and a tested emergency-access path.
Mail flow: connectors, MX records, SPF, DKIM, DMARC, accepted domains, relay devices, and the way external services send on your behalf.
Pilot and cutover: migrate a representative group, test mail, calendar sharing, mobile access, and line-of-business applications, then schedule batches and a rollback decision point.
After the move: validate delivery and access, update documentation, retire only the systems no longer required, and hand the support team a clear ownership map.
Microsoft documents different Exchange Online migration paths. We choose and test a path for the source environment rather than promise a particular duration or zero downtime in advance.
Security and records management are part of the move
We review anti-phishing and malware policies, administrator access, sign-in controls, external forwarding, and domain authentication. Exchange Online includes baseline mail protection; advanced Defender for Office 365 capabilities depend on licensing and configuration. Microsoft's service description distinguishes those features, and its anti-phishing guidance covers SPF, DKIM, and DMARC.
Retention is a policy decision, not a switch called “compliance.” We map what must be retained, for how long, who can place a hold, and what happens when someone leaves. Microsoft Purview retention and eDiscovery have separate roles and behaviors; Microsoft's Exchange retention guidance explains how policies and holds interact. Your legal or compliance owner approves the rules; we implement and test the technical configuration available in your licenses.
Where we have done related work
For AllianceCo USA, Psycray moved email from a third-party Exchange server to Microsoft 365 after a breach and added archiving and security controls. That case describes a specific project, not a promise that every migration has the same scope or outcome.
If you are planning a move or questioning an existing hybrid setup, tell us what is running today and what must keep working through the change. We will start with the inventory and a testable plan.
Questions buyers ask
Do we need to move to the cloud?
Not always. Exchange Online and Exchange Server Subscription Edition support different requirements. We review your environment, dependencies, and records needs before recommending a destination.
Can people keep working during a migration?
We plan pilots, batches, coexistence, and communication to limit disruption. The actual cutover plan and expected interruptions depend on your current setup.
Does Microsoft 365 make us compliant automatically?
No. Retention, access, security, and legal obligations require organization-specific decisions and configuration. Your legal or compliance owner sets the policy; we implement and verify the technical controls.
Start with a conversation. We’ll map the rest.
Tell us what you’re working on. A person on our team replies within 1–2 business days.