Tenant to Tenant Migration
Mailbox Migration Tool
Migrate your Microsoft 365 Exchange Online mailboxes between tenants with zero data loss, in just a few clicks.
Enjoy a fast, secure, and automated migration process.
Get hassle‑free results in minutes

Unlimited data migration

Built for large

Complex environments
Start your 15-day free trial and migrate your first mailbox. No credit card required.


Matthew Rob

IT Manager

We were nervous about migrating 670+ mailboxes, especially the big ones 😟, but Apps4.Pro handled everything smoothly.
Apps4.Pro
Migration Manager

Built for
Microsoft 365 Migration
Source

Tenant A
Target

Tenant B

Migrating Mailboxes…(14,104 / 14,847 Completed)
MailBoxes
Contacts
Tasks
Calendar
Server-side Rules
Public Folder

See How it Works
Migration In Just 3 Simple Steps!
From setup to validation – full control at every stage.
Step 1
Setup & configure in minutes
Connect source and target tenant instantly. Zero scripting required

Step 2
Migrate Unlimited Data
Watch every data move in real time with live progress and status updates.

Step 3
Validate with Confidence instantly
Get accuracy reports. Download proof in one click.


Pre-Migration Analysis
Gain clarity on your data and get a free inventory report before you migrate.

Complete inventory

Identify migration risk

Migration best practices
2-minute setup. No credit card required
Free for a limited time

Tenant to Tenant Exchange Online Mailbox Migration
Ensure a flawless transition of your Exchange Online Mailbox from the source tenant to the target tenant with an exact replica of all critical data.
Maintain uninterrupted service and effortlessly resume
Business as Usual activities after migration.
Get more details

Most Migrated
Highly Used
What Gets Migrated in Mailbox Migration
Apps4.Pro preserves mailbox data, mailbox types, permissions, and rules during
Microsoft 365 tenant-to-tenant Exchange mailbox migration.

Complete Mailbox Data Migration

Mail (Inbox, Sent, Drafts etc..)

Calendar

Tasks & Contacts

Notes & Custom Folders

Public Folders

All Mailbox Types Supported

User Mailbox

Shared Mailbox

Archived Mailbox

Group Mailbox

Permissions and Rules Preserved

Mailbox Permissions

Folder Permissions

Inbox & Server-side Rules


Choose what fits you
Flexible Choices

User Mailbox
Migrate User Mailboxes Across Tenants
The merges of cloud Exchange user mailboxes from one Office 365 tenant to another with precision.

Data Coverage: Mails, attachments, server-side rules, permissions, contacts, calendars, and tasks

Guidance: Step-by-step instructions, refer to our Exchange Online Mailbox Migration Guide.
Get more details

Shared Mailbox Migration Between
Office 365 Tenants
Shared mailboxes allow a specific group of people to manage and send emails from a common mailbox.

Apps4.Pro Tool Support: Migrate shared mailboxes between Microsoft 365 tenants seamlessly.

Data coverage: It involves migrating the entire shared mailbox, including its emails, calendar items, contacts, and permissions.
Get more details


Can apps4.Pro migrate shared mailboxes to M365 user mailboxes between tenants?

Yes. Shared mailboxes can be securely migrated to M365 user mailboxes with flexible options.
Nothing gets missed
No complexity. No compromise.

Archive Mailbox Migration
In-Place Archive provides additional storage space for Exchange mailboxes. If this feature is enabled in your organization, some of your data might reside in archive mailboxes.

Apps4.Pro Tool Support – Seamlessly migrate archive mailboxes in Exchange Online from one tenant to another.

Data coverage – Move archive emails, folders, and files.
Get more details

Migrate Office 365 Group Mailbox
to Another Tenant
Effortlessly migrate O365 group mailboxes from one domain to
another with just a few clicks.

Data Coverage: Migrate emails, calendars, folders, and files securely

Progress Tracking: Live migration tracking

Task Status: Detailed reporting for monitoring task status
Get more details



Testimonials
Real Migration Results, Not Just Promises
Rated 4.8 / 5 by 1000+ IT professionals. See how organizations
achieve smooth Microsoft 365 migrations with zero data loss and minimal disruption.

Testimonials
What Our Clients Say About Us?
Real stories from IT leaders who rely on Apps4.Pro for seamless
Microsoft 365 migration.

Key Features
Powerful Features to Simplify Your Exchange Migration
Apps4.Pro provides advanced features to manage complex mailbox migrations and ensure a smooth tenant to tenant transition.

Custom Timeframe Migration
Migrate emails within a specific period (last 1 or 3 months) or set your own custom date range for greater control.
Mailbox Mapping
Automatically map mailboxes or use custom mapping for accurate alignment between tenants.

Comprehensive Mailbox Migration
Supports all types of mailbox transfers across tenants for a complete and reliable migration experience.

Incremental Migration
Migrate only newly added or modified data after the initial migration to save time and avoid duplication.

Post-Migration Reports
Get detailed reports with granular insights to verify success & ensure zero data loss.
FAQ
Frequently Asked Questions
Need quick help? Check our FAQs.
Still have questions? Chat with our 24/7 AI support agent.
Chat with AI
Still Have a Question?
Our AI Smart Assistant is available 24/7 to provide instant answers to your questions. Start a chat anytime to get the assistance you need.
Ready to Migrate
Migrate Exchange Mailboxes Without Broken
Threads or Missing Emails
Trusted by 15,000+ organizations to migrate mailbox data with complete integrity and zero user disruption.
Start your 15-day free trial and migrate your first mailbox. No credit card required.
































