IMAP Migration from Yahoo to Office 365: A Step by Step Process

Isha Ratra | September 18th, 2018 | Office 365

In today’s technology-oriented world, emails are considered to be the most valuable and powerful mode of communication. Due to change in technology, requirements of businesses and organizations changes. Moreover, organizations always opt for the latest technologies to full fill their business necessities and to remain competitive in the industry. Nowadays, people doing IMAP Migration from Yahoo to Office 365 due to numerous reasons. Office 365 is a subscription plan which includes Office applications and other productivity services that are enabled over the cloud (Internet). Office 365 efficiency and feature-rich nature make it better than Yahoo. Thus, people are switching from Yahoo to Office 365. Now the question arises, how to migrate from Yahoo to Office 365? The user can easily shift from Yahoo to Office 365 with the help of the IMAP migration process. In the section given below, we are going to explain step by step method of transferring yahoo data from Yahoo to O365.

Tip: If the user wants to make use of IMAP to Office 365 Migration tool then the user can contact

Migrating Yahoo Business Mail to Office 365

To move from Yahoo to Office 365 the user need to convert Yahoo data into PST format and then transfer data to Outlook 365. The user has to follow the below-mentioned method to migrate Yahoo email to Office 365.

Part A: Migrate Yahoo Mail to Outlook PST Format

1. First, you need to Sign-In to your Yahoo account. Now, change the Account Security of the Yahoo email

2. Click on the Allow apps that use less secure sign-in option
3. Now, open MS Outlook > File > Info > Add Account option > Manually Configure Server Settings > Next

4. After that, go to Add New Account > Select POP 3 or IMAP > Next. Enter the required login details that are Yahoo email address and password

5. Next, you have to enter in the incoming mail server field and in the outgoing mail server field

6. Click on More Settings > POP and IMAP Account Settings > Assign an Account Name
7. Now, choose the Outgoing Server tab and check the outgoing server (SMTP) requires authentication option. Also, Hit on the radio button Use same settings as my incoming mail server

8. Click on the Advanced tab, type 995 for POP server and type 465 for SMTP server. Select the SSL as the encryption type and click on This Server Requires an Encrypted Connection option.

9. Click on OK > Next > Finish > Exit and Restart Outlook
10. Finally, hit on the Send/Receive option > Select Send/Receive All Folders.

Part B: IMAP Migration from Yahoo to Office 365

The user can move yahoo business mail to Office 365 by following the two methods given below.

Method 1: Using Network Upload

1. Copy the SAS URL and install Azure AzCopy on your system
2. Now, upload all the files to Office 365 account
3. Then, you have to view the uploaded files to continue the process
4. Create a new import mapping file
5. Finally, create the import job in Office 365

Method 2: Using Drive Shipping

1. First, you need to copy the files in a BitLocker encrypted hard disk
2. Then, transfer the drive to Microsoft physically
3. After receiving the hard disk, the data personnel start uploading MS Outlook data which is received to the location. The location is temporary in the cloud of Microsoft
4. Next, you can make use of Office 365 Import service to convert exported Yahoo email to Outlook 365 account

Sometimes, the users face difficulties while implementing the manual solution. Thus, the user can opt for an automated solution that is IMAP to Office 365 Migrator to make the migration process hassle-free. With the help of this utility, the users can export emails from IMAP Server Mailboxes to Microsoft Office 365 account in bulk. Moreover, the software is designed with advanced algorithms which enable the user to work with the tool is a seamless manner. Some of the features associated with the software are:

  • The application is capable to import mailboxes from the IMAP Server to Office 365
  • The hierarchy of the IMAP folders is maintained while the export process
  • The tool can easily import both archive mailboxes and public folders
  • Provides date-based filter option to transfer the selective IMAP data
  • A migration report is also generated by the tool after the completion of the export process
  • While the migration process, the user can also exclude deleted folder and empty folders
  • The software support almost all the IMAP Servers for IMAP mailboxes migration to Office 365 account


There are many users who are Migrating Yahoo Business Mail to Office 365 due to features and services offered by Microsoft Office. Yahoo Mail users are also searching for a simple way to switch from Yahoo to Office 365. Therefore, in the above section, we have explained IMAP migration from Yahoo to Office 365 in a detailed manner. The user can implement the step by step process to import Yahoo email data to Office 365.