They use distinctive protocols and approaches to conduct email migrations from email platforms like GWS, GoDaddy, Yahoo, IBM Lotus Notes and Novell GroupWise. There are many tools available from third parties. Microsoft 365 and Office 365 Mail migration advisorĮxchange Deployment Assistant for Exchange on-premises 2013/2016/2019 In addition, a hybrid deployment can serve as an intermediate step to moving completely to a Microsoft 365 or Office 365 organization. A hybrid deployment provides the seamless look and feel of a single Exchange organization between an on-premises Exchange organization and Exchange Online in Microsoft 365 or Office 365. Hybrid deployment offers organizations the ability to extend the feature-rich experience and administrative control they have with their existing on-premises Exchange organization to the cloud. What you need to know about a staged email migration to Microsoft 365 or Office 365 Using a staged migration, you migrate batches of on-premises mailboxes to Microsoft 365 or Office 365 over the course of a few weeks or months. Use Staged migration if you plan to eventually migrate your organization's all mailboxes to Microsoft 365 or Office 365, over time. The mail contacts and distribution groups in your on-premises Exchange organization are also migrated.Ĭutover migration to Microsoft 365 or Office 365 Performance may likely degrade with numbers higher than that. The recommended number of mailboxes, however, is 150. You can migrate a maximum of 2,000 mailboxes from your on-premises Exchange organization to Microsoft 365 or Office 365 using a cutover migration. Use cutover migration if you plan to move your entire email organization to Microsoft 365 or Office 365 and manage user accounts in Microsoft 365 or Office 365.

Use cutover migration to migrate all on-premises mailboxes to Microsoft 365 or Office 365 over a few days. Migrate your IMAP mailboxes to Microsoft 365 or Office 365 Note that Exchange Online now offers a highly specialized process in Modern EAC for migrating emails from an organizations existing Gmail/G Suite/Google WorkSpace (GWS) deployment to Exchange Online. This includes migrating your mailboxes from other hosted email services, such as Gmail or Yahoo Mail. You can use the Exchange admin center or Exchange Online PowerShell to migrate the contents of users' mailboxes from an IMAP messaging system to their Microsoft 365 or Office 365 mailboxes. Internet Message Access Protocol (IMAP) migration Frequently used migration methods Migration method Microsoft 365 or Office 365 supports several methods to migrate email, calendar, and contact data from your existing messaging environment to Microsoft 365 or Office 365 as described in Ways to migrate multiple email accounts to Microsoft 365 or Office 365.įor networking and performance related questions on Microsoft 365 or Office 365, see Network planning and performance tuning for Microsoft 365 or Office 365. Overview of migrating email to Microsoft 365 or Office 365

When planning a migration to Microsoft 365 or Office 365, a clear understanding of data migration process and velocity helps the admins to plan better. There are many paths to migrate email data for an organization hosted on-premises to Microsoft 365 or Office 365.

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