Here are some third-party migration tools and partners that can assist with Exchange migrations from third-party platforms:īinary Tree: Provider of cross-platform messaging migration and coexistence software, with products that provide for the analysis of and the coexistence and migration between on-premises and online enterprise messaging and collaboration environments based on IBM Lotus Notes and Domino and Exchange and SharePoint.īitTitan: Provider of migration solutions to Microsoft 365 or Office 365.ĬodeTwo: Provider of Microsoft 365 and Office 365 migration solutions. They use distinctive protocols and approaches to conduct email migrations from email platforms like IBM Lotus Notes and Novell GroupWise. There are many tools available from third parties. In addition, a hybrid deployment can serve as an intermediate step to moving completely to a Microsoft 365 or Office 365 organization.Įxchange Deployment Assistant for Exchange on-premises 2013/2016/2019 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. What you need to know about a staged email migration to Microsoft 365 or Office 365Ī 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. 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. You use a staged migration if you plan to eventually migrate all your organization's mailboxes to Microsoft 365 or Office 365. The mail contacts and distribution groups in your on-premises Exchange organization are also migrated.Ĭutover migration to Microsoft 365 or Office 365 Performance suffers 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.
Using a cutover migration, you 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 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 more information about Microsoft 365 or Office 365 networking and performance, see Network planning and performance tuning for Microsoft 365 or Office 365. Overview of migrating email to Microsoft 365 or Office 365 For more information about Dedicated Plans, see Microsoft 365 and Office 365 Dedicated Plans Service Descriptions. The performance information listed in this topic doesn't apply to Microsoft 365 or Office 365 service for dedicated subscription plans.
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