How to Migrate Thunderbird to Office 365 Including Contacts and Attachments ?

Mark Regan | August 18th, 2020 | Convert Your Data

Summary: Migration process from Thunderbird emails to Office 365 or any other email client with attachments is not an easy task. Specially when you are converting your business emails from Thunderbird to Microsoft Office 365 with all the attachments or contacts and calendar. Read this article to migrate email from Thunderbird to Office 365.

MBOX is the file type in which Thunderbird save their data. Emails, attachments, calendar, and contacts – everything will be available in an MBOX file type used by Thunderbird. The agony in migrating Thunderbird to Office 365 is that these email clients do not support MBOX files created by Thunderbird.

So, we need to convert MBOX file contents to another file type which is supported by Outlook or Office 365. Using a trustworthy, well performing and advanced Thunderbird migrating software we can convert Thunderbird emails to Office 365. Hence, here we proudly mentioning the most trusted and downloaded Thunderbird Profile Converter software.

Similar Blog Post  – Migrate Thunderbird to Exchange Server

How to Migrate Thunderbird Emails to Office 365 ? 

Follow these steps to migrate Thunderbird to Office 365:

  1. In Thunderbird to Office 365 Migrator, open email folders to be migrated.
  2. Enable the required emails and select saving option as Office 365.
  3. Browse a desired destination folder on computer to save emails
  4. Choose MS Office 365 and enter login details.
  5. Start to migrate emails from Thunderbird to Office 365.

Check out this video to know how to migrate Thunderbird to Office 365 using Thunderbird to Office 365 Software.

How to Export Thunderbird to Office 365 ? – Complete Tutorial

Here are detailed step by step guide to migrate email from Thunderbird to Office 365:

Step 1: Download and run the Thunderbird to Office 365 Tool.
(You can download the demo version to evaluate the performance and check the user interface. Demo version convert 25 emails or contacts and calendars)


Step 2: Go through the 4 steps instruction given on the welcome screen of the Thunderbird to Office 365 Tool and click on the ‘Next’ button.

thunderbird data converter

Step 3: Here comes the conversion options. Select the Thunderbird data (emails or contacts & calendar) which you wanted to migrate. Secondly, select one of the mailbox data options and click on ‘Next’.

Step 4: Thereafter, Browse and select Thunderbird mailbox data and click ‘Next’ button to proceed further. Now, Select the desired mail folder the folder tree and click ‘Next’.

Select Thunderbird profile folders

Step 5: Here comes a handful conversion options. As we are explaining the steps to migrate Thunderbird to Office 365, select the saving option as Office 365.

Thunderbird to Office 365

To convert Thunderbird to Office 365, use your 365 email and password and click on convert.

If you are converting Thunderbird to Outlook then after selecting PST as saving option click on convert and select the destination folder. You have securely and accurately imported email from Thunderbird to Office 365 or Outlook 2016 / 2013 / 2010 / 2007.

Why Should You Use Thunderbird to Office 365 Software ?

Best in industry Thunderbird to Office 365 migration tool gives all the freedom for its users to export Thunderbird to Office 365 along with with attachments, contacts and calendar to other email clients like Office 365, Microsoft Outlook,, Zimbra, Lotus Notes, Windows Live Mail, OLM, Gmail, Yahoo, and IMAP Host Clients as well.

Convert Thunderbird to Office 365 Directly – Benefits of Software

1. Thunderbird to Office 365 Tool is an accurate and secure software which  does not save any credentials or data. The software convert the MBOX files according the desired migration email client.

2. Export multiple Thunderbird accounts to Outlook PST files in bulk. Thunderbird to Office 365 software create individual Outlook PST files for each Thunderbird mailbox.

3. Advanced migration options to convert Thunderbird emails from one computer to another.

4. Migrate Thunderbird to Office 365 in sync with original mail folders.

5. Import contacts from Thunderbird to Office 365 without any hassle.

6. You can export Thunderbird to Office 365 without any limitations.

7. It is a Windows compatible software – runs on Win 10, 8.1, 8, 7, XP, etc.

7. Also, it gives facility to migrate Thunderbird to Office 365 with all the attachments and calendar.

How to Migrate Thunderbird Contacts to Office 365 – Manual Method

Do you want to migrate Thunderbird contacts to Office 365 mailbox? Then, you are landed at the correct place as we have come up with a solution to export Thunderbird contacts to Office 365. Read on to know in details the way to move Mozilla Thunderbird Address Book to Office 365 account.

Nowadays, Cloud Computing is the foremost way to manage all the data. Whereas Microsoft never stops behind in presenting such concepts, which gives business assistance. It’s the cloud-featured service that is known as MS Office 365 package.

O365 is just a provision of Microsoft Office suite of applications on the web platform. Thus, permitting you to be connected with your business through the year. However, technology of any type should not completely depend on; you must have some backup plan, to avoid any disastrous situation. In a same way, one also needs to perform Thunderbird Backup for contacts. Take a look at how to migrate Thunderbird contacts to Office 365 account.

Method to Export Thunderbird Contacts to Office 365 Mailbox

To convert Thunderbird Address Book to Office 365, follow the mentioned steps:

Export Thunderbird Contacts to CSV Format

Firstly, we need to move Thunderbird Address Book to CSV format. As, Office 365 account will only allow to import CSV file in it. To execute this process, you can take the complete reference from the following :

Import CSV File in Office 365 Account 

1. Firstly, Login to Office 365 account on your machine.

2. After that, click on the app launcher icon >> click on People

3. Then, on the toolbar, click the down arrow next to Manage >> choose Import contacts.

4. Now, click Browse to locate and select your file >> click upload.

5. Wait while your contacts are imported. A successful message will be displayed.

6. Lastly, click Cancel to exit out of the import process.

Be safe by creating a copy of Thunderbird contacts on Office 365 mailbox. Therefore, we have suggested a complete solution to migrate Thunderbird contacts to Office 365 mailbox.

Creating Happy Customers All Around

Mr. Alex Pitt own a company situated in Dallas, TX. His company recently migrated from Thunderbird to office 365. Mr. Pitt was looking for a solution for his team to migrate all important emails, contacts, and calendar to office 365. One of his friends shared his experience with migrating Thunderbird with our software and by cross-checking our corporate website he informed Mr. Pitt that the company has the Thunderbird to O 365 software as well. Mr. Pitt contacted customer care and cleared all his doubts regarding mail migration. Let’s look at his quotes.

“I never thought it would be this much easy. Really happy, this software saved a lot of my business hours. Thanks to your team. It won’t be possible without your awesome Thunderbird to O 365 software”.

We always focus on accuracy, integrity, and simplicity in creating utility software solutions. Its user-friendly interface makes all tech and non-tech users happy.