1. [Home](https://www.g2.com/) 2. ... 3. [Other Office Software](https://www.g2.com/categories/other-office) 4. [Bulk MBOX to PST Converter Software Discussions](https://www.g2.com/products/bulk-mbox-to-pst-converter-software/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_1461dcc359a26b139b10fc2afb52a7a0/bulk-mbox-to-pst-converter-software.png "Product Avatar Image") ](/products/bulk-mbox-to-pst-converter-software/reviews) [ Bulk MBOX to PST Converter Software ](/products/bulk-mbox-to-pst-converter-software/reviews) 0 ratings Bulk MBOX to PST Converter Software is a Windows mbox to pst converter for people moving their mail from Thunderbird to Outlook. Outlook has no way to read an mbox mailbox on its own: the import wizard knows PST and CSV, nothing else. The program takes the mailboxes you exported and writes a standard Unicode PST that Outlook mounts as a regular data file. All of the work happens offline on your PC, and Outlook can stay closed the whole time. 🛠️ How to use 1. Launch the program and load one mbox file or a whole batch. Thunderbird saves every mail folder as a separate file, most often without any extension. 2. Decide on the output. By default you get a separate PST for every mailbox. Tick the merge box to combine them, and each source lands in a top-level folder of its own, so two folders called Inbox stay apart. 3. Choose where the result should go and press start. 4. Back in Outlook, attach the file through the Open Outlook Data File command and browse your mail. ✅ Why IT and office teams pick it - Mail never leaves the workstation. There is no upload step and no third-party server. - Message subjects, both HTML and text versions of the body, sender and recipient fields, dates, the read or unread state and every attachment come across byte for byte. - This mbox to pst converter parses the raw mailbox stream and skips the .msf index that Thunderbird keeps, so an archive with a broken index or a few manual edits still converts. - A dozen mailboxes can go through in a single mbox to pst run instead of one at a time. - The output follows the Unicode PST layout, and we checked it by opening the files in Outlook 2016. 👥 Who uses it - Home users switching from Thunderbird who want ten years of family mail available in Outlook. - Small offices that standardize on Outlook and need a PST for each employee's old mailbox. - Anyone who inherited an archive from Eudora, Pine or mutt, Postbox, or an Apple Mail export and no longer has the original client. - IT staff who want a plain mbox to pst converter for a one-time office migration. ❓ FAQ Is there a way to open an mbox mailbox in Outlook without converting it? No. Outlook reads PST and CSV only, so you convert mbox to pst first and then attach the PST. What is the easiest way to get Thunderbird mail into Outlook? Load the mailbox files from your Thunderbird profile, choose merged or separate output, save the PST and attach it in Outlook. Does the PST open in Outlook for Microsoft 365? It is a Unicode PST, the same kind of data file every desktop Outlook since version 2010 uses. Our own test ran in Outlook 2016. Can several mailboxes be processed together? Yes. Load them all at once and pick a single merged PST or one PST per mailbox. 💻 Free trial, no sign-up or account. Works on Windows 11, 10, 8.1, 8 and 7, both 32 and 64 bit, with 4 GB of RAM. Show More When users leave Bulk MBOX to PST Converter Software reviews, G2 also collects common questions about the day-to-day use of Bulk MBOX to PST Converter Software. These questions are then answered by our community of 850k professionals. 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