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“IMAP server to cloud migration is a frequent requirement for many. We are proud to bring the safest migration solution for the same.”

Managing Director KernelApps

Salient Features

The migrator tool executes precise migration with its advanced features.

Efficient IMAP Mailbox Migration

Efficient IMAP Mailbox Migration IMAP to Office 365 migration tool is designed to migrate mailboxes from almost all IMAP email servers to destinations like Office 365 and Exchange Server. The software supports migration to both Hosted and On-premises Exchange deployments. The migration of mailboxes is swift and completes in a few simple steps.

CSV File for Multiple Mailbox Migration

CSV File for Multiple Mailbox Migration For convenience, IMAP to Office 365 migration tool incorporates a way to add multiple Source and Destination mailboxes using a CSV file. This CSV file contains Source and Destination login details along with mapping information. You can import this CSV file to the tool to automate the migration. This simplifies the migration process.

Migration to Archive Mailbox/Public Folder

Migration to Archive Mailbox/Public Folder IMAP mailboxes can be migrated to mailboxes, archive mailboxes, or public folder in the destination (Exchange/Office 365). So, you can migrate IMAP data to anywhere you need.

Smart Filters

Smart Filters The filters allow you to migrate selected data - Date Filter filters the data by a date range. Exclude Deleted folder & Empty folders options are also available for filtration.

Incremental Migration

Incremental Migration Kernel IMAP to Office 365 tool includes an option in Filter Selection page – Skip Already Migrated Items. By selecting this option, you can migrate only the incremental data to the destination mailbox folder. It avoids migrating the already migrated items from the same Source to the destination.

Wide Email Servers Support

Wide Email Servers Support The software supports a wide range of IMAP email servers for migration. It migrates web-based email Servers like Gmail, Yahoo Mail, AOL.com, Outlook.com, godaddy, rackspace, etc. Other IMAP email servers supported are Lotus Notes, GroupWise, and Office 365.

Backup the G Suite

Backup the G Suite data to the local system If you want to back up the G Suite account data, then you can do it with the Kernel G Suite backup tool. The entire data, including single/multiple mailboxes, G Drive data, Contacts, and Calendar/Appointments, can be backed up this way. Read more..

Migration Summary Report

Migration Summary Report Once the migration process is completed, the software offers an option to save the summary report in CSV file format. The CSV summary report includes complete details of migration like Source mailbox login ID, Folders exported, Migration Status, Item Count, etc. So, it is easy to analyze the migration process.

IMAP configuration why?

Let us see some benefits from IMAP configuration in email servers.

  • Can store mails locally
  • Can access email with an internet connection
  • Can access emails from many different locations
  • Saves storage space on local system
  • Quick review of emails from configured email client

Understand IMAP with its default ports.

IMAP (Internet Message Access Portal) is an internet protocol that allows users to access emails remotely from a remote mail server. The IMAP configuration makes it possible for multiple clients e.g. Gmail mails in Outlook; to access the mails in the individual mailbox. Doing this, will save local space on system and facilitates accessing emails from different locations.

For configuring IMAP to email servers, the default ports are:

  • Port 143Default IMAP
    non-encrypted port
  • Port 993Connect through IMAP securely

How Kernel IMAP to Office 365 meets
the user expectations?

Kernel works for all these requirements
User’s Expectations
What Kernel IMAP to Office 365 provides
Easy-to-use tool
Interactive and self-descriptive features
Single & multiple mailboxes migration
Facilitates both single migration and bulk migration (with CSV file)
No data loss
Complete and exact IMAP mailboxes migration
Selective migration
Beneficial filters (Date Type), Excluding folders options (Deleted & Empty) Selective folders migration (Public & Archive)
Quick migration
Just 3-4 steps to perform full migration process
No extra data migration
Skip Already Migrated Items option to migrate only Incremented Items avoiding duplicate items
Support multiple IMAP clients
Communigate Pro, MailEnable, Sun/Oracle/JES/Iplanet/One, Courier, Mdaemon, Yahoo, Cyrus, Mirapoint, Zafara, First Class, Oracle Beehive, Zimbra, IceWarp, Postfix, Incredimail, Qmail, Ipswitch IMail, Scalix, Kerio, SendMail

Note: If your IMAP client is not listed then please contact to our support team

Use the following steps to flawlessly migrate IMAP mailboxes to Office 365:

Step 1: Run Kernel IMAP to Office 365 software.

Step 2: Add source as IMAP mailbox credentials and Add destination as Office 365 account credentials.

Step 3: Select Single/Archive Mailbox and map source to destination mailboxes.

Step 4: Select migration type - Mailbox, Archive Mailbox and Public Folder.

Step 5: Set filters if selective data saving is your priority.

Step 6: Finally, click I’m OK, Start Migration and save generated log report in CSV format.

Yes, definitely. Migrate IMAP to Office 365 tool supports all IMAP enabled email servers like Office, Exchange (on-premises & hosted), GroupWise, Lotus Notes, Yahoo, Gmail, Outlook.com, godaddy, rackspace and many more.

Yes, the tool displays the information regarding IMAP Mail Server Connection Settings on the right pane in Connect to IMAP Mailbox screen. You get Server name, SSL No., & Port No. from there easily for your IMAP email server.

The only limitation with the Free version of the software is that you can migrate only 10 items per folder from each IMAP mailbox to the destination.
IMAP to Office 365 migration software provides two options - Exclude Deleted folder and Exclude empty folders - that help to skip deleted and empty folders from migration. There is one more option Skip Already migrated items (incremental) that helps in migrating only incremented data in the mailbox.
Using a CSV file with Source & Destination login details and mapping information, you can add Source and Destination mailboxes directly (without adding them separately). This makes task easier.
No, there isn’t. With corporate license you run the software on multiple number of machines at multiple geographical location.

Follow the steps:

Step 1: Prepare a CSV file with Source & Destination login details and required mapping between them.

Note:For help, you can download sample file using the same name button on tool’s welcome screen.

Step 2: Once mapped CSV file is arranged, click Import from CSV option on tool’s welcome screen.

Step 3: Now, browse your CSV file and select the saved one from the site location.

Step 4: Your mapped Source and Destination mailboxes get added.

Step 5: Select type of folder and filters for migration of IMAP mailboxes data.

Step 6: Click Migrate option to finally migrate the mailboxes to Office & Exchange.

Thus, complex migration of multiple mailboxes gets easier with CSV file.

To know if your Gmail account is IMAP enabled or not, try these steps:

Step 1: Login to your Gmail account with User ID and password details.

Step 2: Click the gear shaped icon Settings on the right-most side of the main screen.

Step 3: Select the tab Forwarding and POP/IMAP.

Step 4: If you scroll down the list, you will find IMAP Access option. Click it.

Step 5: Check Status: It could be IMAP is enabled or disabled.

Step 6: Choose your priority by clicking on Enable IMAP or Disable IMAP options.

If IMAP enabled, you can easily migrate your mailboxes to Office 365 through this tool within 3-4 steps.

The IMAP to Office 365 tool is capable to migrate any number of IMAP mailboxes to Office 365. Along with that, it provides privilege to users for migrating different IMAP email servers to Office and Exchange destinations.


For example - If you want to save your Gmail account and Outlook.com account mailboxes to cloud, you can add them with credentials or can use CSV file for direct addition for migration. In similar way, you can migrate as many different IMAP email servers. The only thing required for migration is login details of respective email servers and destination.

Having IMAP configuration in email server, you can access your email from number of devices at a time. While with POP3 protocol, you can access mails in single device.


- IMAP configuration requires internet connection to access emails whereas there is no need of internet connectivity for POP3 protocols (but required for sending and receiving emails).

- IMAP provides faster overview of emails (only headers are downloaded) as compared to POP3 configured emails.

- IMAP relates to two-way communication while POP3 provides one way communication for email servers.

The IMAP to Office 365 migration tool provides it users a Free Trial before the purchase. It makes you go through a general overview of all the smart features along with some data migration (10 items per folder). You can try both single and multiple mailboxes data migration with this version.

Once the users get satisfied with all the running features of the tool, they can buy the tool as per their wish for unlimited swift migration.

Taking tool’s reliable and secured programming into consideration, there are very less chances of errors in migration. However, users can ask for any issue to our support team available 24*7 hours. The support team may ask for the file in which issue is faced with the tool.

If the issue persists, our company integrates a refund policy on this software purchase. The users can avail full refund for the purchased tool, if they face issue in migration and disruption in function even after taking help from support. For refund, mail to sales@nucleustechnologies.com regarding refund of the tool mentioning the issue in detail in it.

Note:Cases in which no refund or partial refund is available

Case 1 - The user denies sending the file with issue for inspection even after signing NDA (Non-Disclosure Agreement) as the issue remains hidden.

Case 2 – The user has purchased the tool but does not want to use it in future.

Case 3 – Without trying Demo version, the user has found that his system OS is not compatible with the software

Case 4 – Partial refund facility is available if mistakenly different tool has bought than the required one.

Synchronizing IMAP folders manually will take a lot of time and includes risk. The method you mentioned becomes lengthy as you need to convert IMAP mailboxes data to PST and then importing to Office 365.

When you try to migrate emails directly from IMAP to Office 365, there are chances of errors in creating a new Outlook profile for each user and in synchronization.

So, an easier way to migrate IMAP mailboxes to Office 365 is using affordable IMAP to Office 365 tool. You just need the login details with server name and port number to migrate your IMAP mailboxes. The migration is performed in just few steps. The software costs cheaper than other migration tools and performs with full efficiency.

It is possible to access your IMAP data easily at new location with IMAP to Office 365 migration tool. Just download the tool; enter the login details, server name and port number and get back your IMAP mailboxes data. The migration tool provides an easy approach allowing migration of only required data with advanced filters. You can save this retrieved data to Office 365 and Exchange Server.
Yes, surely. The software supports almost all IMAP enabled email servers for migration. For migrating Office 365.com account, the server name and port number is also available at the tool’s interface. You just need to have Office 365.com login details along with you and destination login details too.

Supported Versions Outlook PST File - Office 365/ 2019/ 2016/ 2013/ 2010/ 2007/ 2003/ 2002/ 2000/ 98 and 97

Operating SystemWindows OS Platforms - Windows 10/8.1/8/7/Vista/XP/2000/98/NT and 95 and Windows Server 2016/2012/2008 R2/2008/2003 R2/2003

Processor- Pentium Class
Memory + Hard Disk128 MB Minimum
Minimum 50 MB of disk space

Home License Permits home users to use the software on single system

Corporate LicenseFor multiple machines within one organization at single location

Technician License
For service providers to use for
multiple organizations

Electronic Yes


Date First Available
View History

User Reviews

Kernel IMAP to Office 365

(4.9 / 5) 437 Reviews

Five stars to the GUI and fast performance of the tool.

PhileTechnical Aquisition

I think the extensive features of this tool like migrating multiple mailboxes, smart filtering options, etc. make it a great software.

AnthonyTechnical Aquisition

I must say it is a useful tool, as you can also migrate your IMAP mailboxes to Office 365 archive mailboxes or public folders.

AmeliaTechnical Aquisition
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