

Thunderbird messages to Outlook 365 with large attachment files may take a lot One at a time, to desktop and then to Outlook.

Select Folder tab and select the New Folder option. The folder in Outlook where the Thunderbird messages will be saved. The desktop folder and save the emails there. On the messages and select Save As option.

That, open the message folder where the emails that need to be movedįrom Thunderbird to MS Outlook are saved. The Thunderbird application on the system. Step 1: Save Thunderbird Email to Windows PC Method #1: Import EML Files to Office 365 Methods to migrate Thunderbird mailboxes to Office 365Īs mentioned before, there are several methods ofĬonversion. Methods available for migrating Thunderbird to Office 365 account. So, migrating Thunderbird mailboxes to Office 365 would first require converting all the data into a supported format such as Portable Storage Table (PST) or EML. Firstly, Office 365 or Microsoft 365 doesn’t support MBOX file type that is used in Thunderbird for storing mailboxes-comprising emails, attachments, contacts and calendars, etc. However, migrating Thunderbird emails to Office 365 or any other email client along with attachments is not an easy task. Mozilla Thunderbird mail users are migrating to Office 365 or Microsoft 365 for reasons like security, scalability, availability, collaboration, and affordable subscription-based pricing.
