Move Mailbox from On Premise to Microsoft 365 Using Proven Ways

Managing an on-premise email platform is standard, but modern businesses look for cost savings, reducing risks, and 0% downtime. Managing email locally has now become outdated and risky. When looking for a secured email platform then Microsoft 365 is the right choice as it follows advanced protections and is fully reliable to manage your business data. In this guide, we will explain tested techniques to easily migrate mailbox from on-premise to Microsoft 365. Whether you manage 50 users or 5000 it offers properly planning, tested and reliable methods for large scale migration.

Reasons to Migrate Mailbox from On Premise to Microsoft 365

• Maintaining on-premise servers required hardware maintenance, upgrades and IT staff. Microsoft 365 removes these costs by shifting everyone to the cloud.
• With Microsoft 365, users can access emails from any device, anytime without being limited to Microsoft 365 network.
• Microsoft 365 offers advanced security features like threat protection, data encryption, and compliance tools that are difficult to manage on-premise.
• No need to manually update servers or software. Microsoft handles updates, security patches and improvements automatically.
• You can easily add or remove users based on your business needs without investing on new hardware.

Pre-Migration Planning

Before migrating mailboxes to Microsoft 365, it’s essential to know your On-premise email environment is ready to migrate. Skipping this phase is the fastest way to encounter sync failures, data loss or downtime. Mailbox migration is not just simply copying data. It involves synchronizing identities, infrastructure, and services between your on-premise system and Microsoft 365.

How to Move Mailbox from On Premise to Microsoft 365?

To move the mailbox from On Premise to Microsoft 365 requires careful planning. Improper planning can slow down processes, repeated restarts or duplicate mailbox items.

1. Configure Azure AD Connect
2. Download and connect Azure AD.
3. Select your preferred login method such as Password Hash Sync or Through Authentication.
4. Run synchronization and verify that all mailbox data appear in Microsoft 365.
5. Verify UPN and email address as matched correctly.
6. Configure Mail using TLS encryption.
7. Enable on-premise environment and Microsoft 365.
8. Setup organization relationship and sharing.
9. Go to the Server Admin Center and navigate to Migration.
10. Click on the endpoint and add a new endpoint using your server details.
11. Fill credentials and test the connection.
12. Once configured successfully, start migrating on-premise mailboxes to Microsoft 365.

Challenges of Manual Method

• It will take lots of time especially when dealing with large mailbox data or multiple mailboxes.
• You need to perform multiple steps which may not be reliable for common users.
• You must have a stable internet connection to prevent delay or failure of the migration.
• Some emails or other items may not migrate especially when you are handling corrupted or unsupported content.
• Users may face issues like delayed emails, login issues or syncing delays during migration.

Time to Go Smart for Migrating Mailbox from On-Premise to Microsoft 365?

To migrate mailboxes from On-premise to Microsoft 365, then we recommend you to choose SysTools Importer as it allows importing MB0X, EML, PST and MSG files into Microsoft 365 with preserved its users mailboxes and other formatting’s.

Download Now Purchase Now

1. Download and run On-Premise to Microsoft 365 Migration Tool.
   
2. Select the source files you exported locally.
3. Select Microsoft 365 as destination and validate it.
   
4. Click on fetch user and select your targeted mailbox for migration.
5. Select concurrent user features based on your system configuration.
6. Click Start Import to begin migrating mailboxes from on-premise to Microsoft 365.

Core features of On-Premise to Microsoft 365 Migration Tool

• Migrate mailboxes exported from MBOX, EML, PST and MSG formats.
• Move data from any on-premise email platform to Microsoft 365, Google Workspace and more.
• It allows to transfer emails, contacts, calendars, tasks, and other items completely without compromising mailbox data.
• Allows multiple users to migrate at once based on system configuration for faster processing.
• It preserves its original formatting, attachments and metadata during migration.

These are some common questions users usually ask

Quick Answers to Common Doubts

What happens if a migration fails midway, can I resume it?

If a migration fails midway, the On-Premise to Microsoft 365 Migration Tool offers pause and resume option. Only the remaining data is imported and prevents any loss.

How long does it take to move a 10GB mailbox?

Migration time depends on connectivity, your mailbox size and server performance. On an average 10 GB mailbox data can take a few hours. Using batch migration or concurrent features can reduce time especially reliably to process on multiple user accounts.

Can I migrate public folders?

Yes, you can migrate public folders including emails, contacts and calendar. Recommended tool allows to migrate all content and validates account and mailbox data to prevent failures.

Make the Best Decision

This guide explains to you the best approaches that can easily move mailboxes from on-premise to Microsoft 365. With the right approach, the process often becomes simpler. If you have any technical issues then you can connect with our Support Team as it is available for you 24/7.