--- title: WholeClear Thunderbird to Office 365 Converter Reviews meta\_title: 'WholeClear Thunderbird to Office 365 Converter Reviews 2026: Details, Pricing, & Features | G2' meta\_description: Filter reviews by the users' company size, role or industry to find out how WholeClear Thunderbird to Office 365 Converter works for a business like yours. aggregate\_rating: rating\_value: 4.2 review\_count: 3 scale: '5' date\_modified: '2026-01-20' parent\_category: name: Collaboration & Productivity url: https://www.g2.com/categories/collaboration-productivity --- # WholeClear Thunderbird to Office 365 Converter Reviews & Product Details WholeClear Thunderbird to Office 365 Converter permits the instant import of Thunderbird mailboxes to Office 365 account keeping all associated attachments safe. There is full safety to email properties and folder hierarchy while uploading Thunderbird files to Office 365 cloud. A free version of Thunderbird to O365 Converter is available to self-check the tool before buying it. * * * Seller [WholeClear](https://www.g2.com/sellers/wholeclear-1d703898-d6f6-4f2b-b4bc-6b76fbaec24a) Discussions [WholeClear Thunderbird to Office 365 Converter Community](https://www.g2.com/products/wholeclear-thunderbird-to-office-365-converter/discuss) Show More ## Top-Rated Alternatives [ ![Adobe Acrobat](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Adobe Acrobat") Adobe Acrobat 4.5/5(5,330) ](https://www.g2.com/products/adobe-acrobat/reviews) [ ![Foxit PDF Editor](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Foxit PDF Editor") Foxit PDF Editor 4.6/5(3,701) ](https://www.g2.com/products/foxit-pdf-editor/reviews) [ ![pdfFiller](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "pdfFiller") pdfFiller 4.6/5(923) ](https://www.g2.com/products/pdffiller/reviews) [ View All Alternatives ](https://www.g2.com/products/wholeclear-thunderbird-to-office-365-converter/competitors/alternatives) ![Hamza S.](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Hamza S.") HS Hamza S. Software Developer Enterprise (\> 1000 emp.) 6/18/2024 "Best Mailbox Exporter Software if you use ThunderBird" 4/5 What do you like best about WholeClear Thunderbird to Office 365 Converter? Intuitive interface makes migration straightforward for all users. Quick setup with minimal configuration steps. Responsive support team ensures prompt assistance and guidance. Reliable performance for frequent migration needs. Comprehensive toolset includes advanced options for versatile migrations. Seamlessly integrates with existing workflows and environments. Review collected by and hosted on G2.com. What do you dislike about WholeClear Thunderbird to Office 365 Converter? Occasional slowdowns during large-scale data transfers. Compatibility issues occur with certain Thunderbird configurations. Review collected by and hosted on G2.com. What problems is WholeClear Thunderbird to Office 365 Converter solving and how is that benefiting you? I have dozens of Mailboxes setup inside the thunderbird application. I use these emails/mailboxes for managing and sending/receiving bulk emails which results in rapid growth in number of mails inside each mailbox. Since our team uses Microsoft Office 365 suite of tools at work, I wanted a way to quickly convert all this into an Excel file so that our team can perform analytics and extract useful information. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Electrical/Electronic Manufacturing](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Electrical/Electronic Manufacturing") UE Verified User in Electrical/Electronic Manufacturing Mid-Market (51-1000 emp.) 6/18/2024 "Very Good Converter" 4.5/5 What do you like best about WholeClear Thunderbird to Office 365 Converter? The process to convert emails to office 365 was effortless. I was initially worried it would throw errors or have to do it multiple times, but it converted everything and I was able to recover all my emails in 365. The implementation is pretty simple and I used to use it on a daily bases. They have a great Customer service and when you open a ticket they usually respond with in 24hrs. Review collected by and hosted on G2.com. What do you dislike about WholeClear Thunderbird to Office 365 Converter? The import option is great but if I want to do it the other way around, it threw me a error and I had to manually map the POP settings. It works great with Chrome but if using MS Edge [same chromium] it throws errors sometimes. Review collected by and hosted on G2.com. What problems is WholeClear Thunderbird to Office 365 Converter solving and how is that benefiting you? Normally to convert a thunderbird emails to outlook and import them there it needs high level knowledge and technical skills but this converter is making that process easy and effortless. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ![Verified User in Outsourcing/Offshoring](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User in Outsourcing/Offshoring") AO Verified User in Outsourcing/Offshoring Small-Business (50 or fewer emp.) 6/18/2024 "Lifesaver!" 4/5 What do you like best about WholeClear Thunderbird to Office 365 Converter? We've just moved from self-hosted email to cloud M365, this tool is the ideal sort of thing that needs to be built into Office, rather than a separate tool! This sort of thing is exactly what we were after to move over a huge amount of attachments, archived emails, etc. Review collected by and hosted on G2.com. What do you dislike about WholeClear Thunderbird to Office 365 Converter? Free version lets you test that it'll work first - which is great, but it'd be ideal if there was a cheaper version for one or two users. A Linux version would have been great too. Review collected by and hosted on G2.com. What problems is WholeClear Thunderbird to Office 365 Converter solving and how is that benefiting you? Moving from self-hosted to cloud email, moving over user inboxes without affecting the existing 'archived' inboxes that are being kept as a backup. Review collected by and hosted on G2.com. Show More Validated ReviewerIncentivizedSource: G2 invite ### There are not enough reviews of WholeClear Thunderbird to Office 365 Converter for G2 to provide buying insight. 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