How Do I Migrate Emails from Thunderbird to IMAP on Mac?

Bhawna Barwal | email conversion file conversion imap software technology thunderbird | 4 minutes read | Modified on: 15-09-2025

Introduction

If you utilize Mozilla Thunderbird on Mac to manage emails via POP3 you might be wondering how do I migrate emails from Thunderbird to IMAP on Mac. In this article, we will know steps to safely and efficiently migrate emails from Mozilla Thunderbird to IMAP server ensuring all the data remain the same.

IMAP: Emails can be saved on a server and viewed from many devices using IMAP (Internet Message Access Protocol), which keeps everything in sync. If you’re moving email providers, combining accounts, or just want your messages to be accessible from anywhere, it makes sense to convert from Thunderbird to IMAP. Additionally, by caching the IMAP enables users to access their emails data offline. This implies that users can still access their email messages even in the absence of an internet connection. It provides enhanced security features that enable the server to encrypt the connection and authenticate the client, it helps in prevent from unauthorized access.

Thunderbird to IMAP Conversion Solution to Migrate Thunderbird Emails to IMAP on Mac

BitData Migration Thunderbird Converter for Mac – It helps you move email data from Thunderbird (in the form MBOX, EML, SBD, etc.) into an IMAP account. The software can handle conversion of multiple emails from Thunderbird at the same time. Hence, it is capable to process numerous emails in one go. It keeps folder structure/hierarchy, attachments, email metadata (sender, recipient, date, subject), formatting intact while conversion. This application is available on all Mac OS editions for example Mac OS Catalina, Monterey, and many more. Take a demo edition of the application clicking on the following link.

How Do I Migrate Emails from Thunderbird to IMAP? – Working Steps

The crucial steps that must be taken in order to convert Thunderbird to IMAP are as follows:

Step1: Install Thunderbird to IMAP Tool on your Mac OS computer after downloading it.

Step2: To upload the required Thunderbird data, select your preferred option.

Step3: By checking the boxes that appear with the Thunderbird email list, users can import the necessary Thunderbird emails into IMAP appropriately. Click Next.

Step4: Click “Select Saving Option” and select IMAP, and provide the appropriate information, including your email account and password, IMAP Post, IMAP Port.

Step5: Next, choose the destination path by clicking the Browse option. Start conversion selecting “Export”.  After a while, a log report with all the conversion’s details will automatically appear. Now finish the migration process clicking on the Ok button.

Key Features of Thunderbird to IMAP Migration App

Let’s discuss all the benefits of Thunderbird to IMAP for Mac Tool below:

Bulk Thunderbird Data Import: If you have multiple emails from Mozilla Thunderbird to IMAP, then this software helps to convert them all at once. So now you can avoid converting them one by one manually.

Retain Folder Hierarchy:  Thunderbird to IMAP Converter makes it sure folder structure of Thunderbird appears the same on the IMAP server.

Preserve Attachments and Metadata: ItKeeps all the Thunderbird email’s components like dates & time, subject, sender, recipient, CC, BCC, etc.

Auto Detect Thunderbird Profile Option Availability: The application configures the Thunderbird profile automatically. This option makes it easier for non-techie users if the tool can find your Thunderbird data automatically.

Manual Data Selection: Users can also upload and choose the Thunderbird files manually for the migrating them to IMAP Server.

No File Size Limit: It makes it feasible to migrate large-sized Thunderbird files without any hassle.

Free Demo: To test the efficiency of the Thunderbird to IMAP Migration App and see if everything migrates well, free demo option is available.

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Frequently Asked Questions

Will this app is easy to use for a user who belongs to a non-IT stream?

Answer: The suggested Thunderbird to IMAP Conversion Software is designed with simple yet appealing interface that makes capable users to utilize this application without any technical skill.

Is Thunderbird installation mandatory to migrate emails from Thunderbird to IMAP?

Answer: Users can use this app without Thunderbird installation without any issue.

How many Thunderbird files can transfer to IMAP Server with the software?

Answer: Users can import unlimited Thunderbird emails to IMAP Server at once. And there is no such limitation has been put on the number of files.

Let’s Sum Up

Migrating data from Thunderbird to IMAP is not at all a tricky and technical process, once you opt for the Thunderbird to IMAP Converter for Mac. By using the software it is easy to know how do I migrate emails from Thunderbird to IMAP, you can ensure that your messages are backed up and accessible anytime. It is advised to always make sure to back up Thunderbird data before starting the migration. The software runs on all Mac OS editions for example Mac OS Catalina, Mojave, Monterey, High-Sierra, Yosemite, and many more. The free trial edition of the tool enables to convert 25 emails from Thunderbird to IMAP completely free of cost.