Import PST to Outlook Web Access (OWA) Office 365

Microsoft Outlook is a popular email application that is used by most users worldwide. But nowadays, users prefer to open their PST files on multiple platforms instead of just MS Outlook. Outlook Web Access (OWA) is a web based email client that runs on a browser. It is very similar to Outlook and gives you the flexibility to access your mailboxes, irrespective of your location and without requiring the installation of Microsoft Outlook or other email clients on your system. Outlook Email can be accessed through Outlook Web Access (OWA) when configured in Office 365. Hence, in this article we are going to elaborate some useful methods to import PST to Outlook Web Access (OWA) Office 365.

Manual approach to import PST to Outlook Web Access (OWA) Office 365

This method uses the network upload method. So, follow all the given steps one by one to import PST files to Office 365 OWA in efficient manner.

Step 1: Upload PST to Azure AzCopy Tool

  • Visit the link and login to your Microsoft Account.
  • After logging, move to ‘Security and Compliance Center’ and choose ‘Data Governance’. After that click on ‘Import’ button.
  • Now, an ‘Import’ window will open, click on the ‘New Import Job’.
  • Now, click on the show ‘Network Upload SAS URL’ and then copy that URL.
  • After that select the ‘Upload’ option and click on the Azure AzCopy Tool to download it.
  • Now, start the Azure AzCopy tool to import PST files to OWA.
  • Now, open Command Prompt and type to open PST file in Outlook Web application

AzCopy.exe //Source:<<Location of PST files>> //Dest:<<SAS URL>> //V:<<Log file location>> //Y

Step 2: Create PST Import Mapping File

As soon as the PST file is uploaded to the Azure storage location, you will then have to move it to Office 365. You need to create a Comma Separated value (CSV) file that contains information about the user’s mailboxes and PST files. The CSV file will be used to create the import job.

Step 3: Create PST Import Job

  • In the import data page, check the box “I am done uploading my files” and “I have access to the mapping file” and after that click the Next button.
  • In the next page, Select a mapping file that you previously created in CSV format
  • Press the validate button to check for any errors. After confirmation, click the Save button and then click the Close button.

Step 4: Start the PST Import job for Outlook Web Access(OWA)

  • Visit the Security & Compliance Center and click Import PST file page.
  • Click on the link Ready to import to Office 365.
  • Now “Filter your data” before importing.
  • Filter the data accordingly and press the Next button.
  • Now, to start importing your files, just click the Import data option.
  • Soon you will get your data in Outlook Web Access (OWA).

Automatic approach to import PST to Outlook Web Access(OWA) Office 365

By using third party tool named Regain PST to Office 365 Software. It takes few clicks to import PST to Outlook Web Access(OWA) Office 365 are as follows:

  • Download and install PST to Office 365 Migration Tool for Outlook Web Access(OWA).
  • Start the software and click “Add File(S)” button and choose a single or multiple PST file.
  • Now add Office 365 Mailbox as destination by clicking “add” button
  • Map source mailboxes with destination mailboxes in this steep and click on “Set Filter and Migrate”.
  • Choose the type of migration amongst Archive Mailbox, Mailbox and Public folder and click on “Migrate”
  • Select filters to migrate specific data and click “Start Migration” button.
  • Now, PST File successfully converts into the Office 365 account and then can be accessed on Outlook Web Access(OWA).

Features of Regain PST to Office 365 Migration Tool

Use this multi talented Regain PST to Office 365 Migration tool that helps users migrate from Outlook PST to Office 365 and Live Exchange Server in a quick and secure manner without interruption. It does not require any advanced technical knowledge to open Outlook mail data in an Outlook webmail application. Users can Import PST  to Office 365 directly and then can be accessed on Outlook Web Access (OWA).

  • Migrates Outlook PST email to Office 365 and Live Exchange Server successfully
  • It helps to save Outlook Email items to Office 365 platform i.e. email messages, notes, drafts, calendars, events, etc. with ease and no hassle.
  • Provides preview facilities to view the selected PST files before actual migration
  • Performs selective conversion of Outlook PST file for saving time and efforts of the user
  • Offers bulk export Outlook PST files to Office 365 or Live Exchange Server
  • Self-intuitive and easy to use GUI for easy migration without any expertise

It helps users to Upload or Import PST File to Office 365 & Live Exchange Account without Outlook Installation

Export EML to Office 365 Professionally

Do you know, what trends nowadays – Migration between Office 365 and file formats. Now most of the users are prefer to move towards the best options available in the market instead of continuing with their current email client. We all already know that Microsoft has captured most of the market with its latest and modern software and applications. Office 365 is popular web-based email client provided by Microsoft Corporation and businesses are moving toward it without a second thought.

Users must go through the conversion process to move data, as Office 365 has its own file format and is not compatible with other formats. So, if you want to migrate EML files to Office 365 account and looking for a reliable method. Then, your search is now on end. As we have come up with the authentic solution to make the migration process stress-free and effortless.

Why Migrate into Office 365?

EML is one of the default email storage formats for a large number of desktop-based applications. It stores all the data of the messages along with attachments, and not only this it allows us to save the emails as the EML files supported by Windows Live Mail, Thunderbird, Outlook Express and so on.

Whereas, Office 365 is an cloud based application that can be accessed data from anywhere at any time with the connection of internet, that’s why this online service of Microsoft is also known as Outlook Web Access or Outlook 365. Generally Office 365 is available and anyone can use it on different devices like mobile, android, laptops, PC, Mac and so on.

We know that desktop based application have its own importance, but users may need to move e-mail clients from desktop to online services to avail the benefits of updated features. Office 365 is the perfect cloud-based email service available to users. Therefore, migration in Office 365 is trending.

How to Migrate EML to Office 365?

There are two methods available for migrating EML to Office 365, either you can use manual methods or any automated solution that you think is better. But when exporting EML files in Office 365 using manual technology, it takes a lot of time to complete the conversion work, as it has a very long process. If you choose this method, you need to be careful while running the conversion process to secure the data.

Migrate EML to Office 365 Manually

  1. First open Windows Live Mail then Click “File” → “Export Email”, and then select “Email Messages”
  2. Now from the Program list select “Microsoft Exchange” and click the “Next” button
  3. New message windows will pop-up on screen for confirming the exportation of messages. Click on “OK” and move to the next step
  4. Now select the files/folders that you want to export from Windows Live Mail into MS Outlook and click on “OK”
  5. A window will appear on screen displaying the EML to PST conversion process
  6. Now click the Finish button once the conversion process completes
  7. Now you are required to sign in into your Office 365 account
  8. In the Import page (of Data governance), you are required to create a new job to upload data to Office 365 Azure storage location
  9. Now you need to copy the file and save the network upload SAS URL
  10. Now download and run the Azure AZ Copy tool on your system
  11. Now, use the command prompt to upload the PST files into Office 365 using the AzCopy.exe tool.
  12. Now you need to create a CSV file with mailboxes details
  13. And then again, create a PST import job
  14. Finally, import PST files into Office 365 successfully

Just now you saw the manual steps given to import EML files in Office 365 above, you might find this process a bit difficult, but this manual method is not only difficult but it also has some major drawbacks; It takes a lot of time and even there is a possibility of data loss. So you need to do this migration work with utmost care, one wrong step can ruin the whole process and can also lead to data loss. If you want an easy solution for your import work, use the professional tools we recommend below.

Professional Approach for EML to Office 365 Migration

You need a professional tool like – Regain EML to Office 365 Migrator tool, which is able to complete your work in a few seconds. This tool has been developed with the latest and robust features that smoothly complete the migration process of EML file to Office 365 account. Let us see here some features of this incredible utility, which is given below.

Features of Regain EML to Office 365 Migrator Tool: 

  • Designed with modern technology that migrate multiple EML files/folder to Office 365 account
  • Allows migration of EML to Office365 with email properties such as Contacts, Calendar, etc.
  • Offers facility to add multiple files in a single attempt, without limit the size of files
  • Ability to preview, allows the user to see the data before the migration process
  • User-friendly features to migrate EML files into Office365 and live Exchange Server
  • Provides filtering data option such as Subject, from, to, et cetera, for selective migration
  • Allows users to view migration report after migration without any efforts
  • Offers a demo version free of cost and lets you migrate the first 30 items from each folder.


Continuously remain in businesses in this competitive market, which is now establishing the easiest way to transfer data. Office 365 meets the essential needs of users. Therefore, the migration to Office 365 has been marked by an increase in recent years. You can rely on Regain Software for your migration work; this tool never lets its users down and provides 100% guaranteed satisfactory results to its users at all times and will continue to do so. If looking for eml to pst converter tool then you can try this application.

How to Migrate or Transfer Outlook Emails to Office 365 Account

Migrating personal or professional e-mail to the office 365 from any e-mail client, allows you to access e-mail from any device connected to the Internet. Office 365 also has many services that enhance the productivity of your email. Because MS Outlook is the main email client, so most of you will have to migrate your email from MS Outlook Mailbox to Office 365 account.

Outlook has an Export / Import option where you can export your email to an external PST file. Later, you can import the PST file into Outlook again with Office 365 account.

Following are the reasons that push you to export Outlook Emails to Office 365 account.

1. Conversion of emails accounts

When you use an email like yahoo (test…, AOL (test… and you want to change a new email account like test…
Although you can create a new test in the … Outlook app, it will not have an email from the old account.

2. Change of PC to PC

When you change your computer from old to new, you need to reinstall Outlook. In this case, you want your old e-mails as well. So you need to export your email to the PST file and import the PST file to that new computer.

3. Periodic Backups

Large inbox backups reduce the size of the entire mailbox, and period backups increase data security. After downloading the backup of the data in the PST file, you need to save the file to any external location, such as another computer or USB drive.

The Outlook Migration Process requires you to move your email to an external PST file and import the PST file into another Outlook program that has an Office 365 account.

Export Outlook Emails to PST

  1. First go to the top of your Outlook ribbon, and click File.
  2. Choose Open & Export>>>Import/Export.
  3. In “Import and Export Wizard” choose ‘Export to a file’ option and Click Next.
  4. Select the Outlook Data File (PST) and click Next.
  1. Select an email account to export. Make sure you check ‘Include Subfolders’ to get everything out of the account. Select Contacts, Calendar, Boxes, Magazine, and click Next
  2. Click the Browse button to select the location of the PST file where the file will be saved. Click the ‘OK’ button to proceed further.
  3. If you want to export data to an existing PST file, then click Options and specify what to do when exporting data already exist in the file.
  4. After that just Click Finish.
  5. The Outlook starts with the export process.

NOTE: When you run the export process at this time, if you choose a password-protected option, it increases the security of your personal PST file, so in most cases you have to choose to place the password in the PST files.

Once you export the mailbox data in PST file, you will still required to go to the Outlook and import the PST file into the Office 365 account mailbox.

Import PST to Outlook

  • Click File tab, click Open & Export, and select Import/Export.
  • Import and Export wizard will appear on the screen.
  • Choose ‘Import from another program or file’, and then click Next.
  • Now choose Outlook Data File (PST) and click Next.
  • Browse the PST file that you had exported earlier, and then under the Options, there are three options –
  1. Replicate duplicates with items imported.
  2. Allow duplicates to be created.
  3. Do not import duplicates.
  • Select the option among the three and click Next.
  • If you specify a password in the PST file, you must enter the password and click OK.
  • Choose the Import items to the same folder in option and select the Microsoft 365 mailbox, Click Finish.
  • Outlook will start importing PST file content into Office 365 mailbox. Later, you can open all the contents of the mailbox.

Final words

When you want to export and import a PST file into the Office 365 mailbox, then you can use this inbuilt Import / Export method that proves to be most appropriate for one mailbox. If you want to migrate multiple mailboxes to the Office 365 account, then you will have to spend a lot of time migrating to each mailbox. Moreover, there is no significant e-mail filtering and exclusion of unwanted emails as well. Thus, if you want to conduct safe and secure migration, then you must go for a professional Regain PST to Office 365 Migration tool with adequate features. This tool embedded with free trial version, which allow user to import first 30 emails per folder at free of cost.

How to Import or Upload PST to Office 365

Office 365 offers a number of subscription benefits that Microsoft offers such as Word, Excel, PowerPoint, OneNote, etc. Office 365 meets almost all international security standards such as HIPAA, GDPR, HITECH and many more. On the other hand, Microsoft Outlook is an email client that uses the PST file to store all data elements such as emails, contacts, etc.
As Office 365 is becoming increasingly popular due to its wide range of software, nowadays, users prefer it more as compare to standalone application like Microsoft Outlook. You can easily upload PST to Office 365 using a variety of methods. Read below section to know more about it in brief:

Different ways to upload PST into Office 365

Method 1: Using Outlook to Uploading PST File into Office 365 

  1. Install and open Microsoft Outlook
  2. Go to the File menu and click on the Open & Export button
  3. Now on screen Import and Export wizard will open
  4. here, click on the “Import from another program or file”
  5. Now choose PST file and click Next to proceed
  6. Select desired .pst file
  7. Click Finish to complete the process

Method 2: Using Network Upload method to Import PST File into Office 365

  1. First you copy the SAS URL after installing Azure AzCopy tool
  2. Upload the PST file to Office 365 using Azure AzCopy tool
  3. You will view the list of PST file that uploaded to Office 365 using MS Azure Storage Explorer
  4. Now you need to create the CSV file for mapping purpose
  5. Now, create a PST import job in the import service in Microsoft 365.
  6. Now your PST file has been successfully imported in Office 365

Method 3: Using Drive Shipping method

  1. Install & Open exe tool and get a storage key
  2. Use this tool and copy the PST file to hard drive
  3. Now, you need to generate a PST mapping file so as to migrate it to Azure storage area
  4. Next, you need to create an PST import job in Office 365
  5. At last, dispatch the hard drive to Microsoft to upload the PST file to Azure storage area

Method 4: Using Professional Methods for Importing PST File

Steps to Import PST File into Office 365 :-

Step 1: Install PST to Office 365 Migration software

import pst file to Office 365 account

Step 2: Now Choose the PST file that you want to import & click on start importing button to continue.

How to Upload Outlook PST files to Office 365

Step 3: Log in by entering User Name & Password and Upload Single or Multiple PST to Office 365. Click Connect to proceed

How to Import Outlook PST files to Office 365?

Step 4: Finally the import process completes and your PST files are successfully imported to Office 365 Account at your desired location.

How to Migrate Outlook PST files to Office 365 account


Benefits of Professional Methods

Regain PST to Office 365 Migration tool is professional software that smoothly import Outlook PST file into Office 365. It also import PST file into Live Exchange Server including Emails, Contacts, Calendars, Tasks, etc. Here, I have listed some other features of Regain PST to Office 365 Migration tool below:

  1. Migrates Outlook PST email to Office 365 and Live Exchange Server easily
  2. Complete migration of Outlook PST file including Emails, Contacts, Calendars, Tasks, journals, attachments, notes, etc
  3. Provides filter option to import selective Outlook PST files
  4. Allows preview of entire email folders before importing to Office 365
  5. Preserve original folder hierarchy of Outlook mailbox while importing
  6. No file size restriction when migrating Outlook emails to Office 365
  7. Support all the versions of MS Outlook and MS Exchange Server
  8. Self-intuitive and easy to use GUI for importing PST to Office 365

It also offers you free trial version of this software which is absolutely fee of cost. You do not have to pay for it; it is available on the software official website. Go and download it & try it once it helps you in evaluating the features and working of the software. It also allows you to import 30 emails per folder at free cost. If you like it, you can purchase its licensed version to import limitless files without any disturbance.


To upload PST into Office 365, you can use various methods that are available. There are different procedures for this. You can use either a manual or an automatic approach. If you take my advice, then the automatic way will proves to be beneficial for you because in this you just need to download the software and import PST files into Office 365, this is the most easiest way as compare to the manual method which is long as well as time consuming.