One of the best options is eSoftTools IMAP Backup & Migration software, which helps to migrate Proton Mail to Office 365 (Microsoft 365). It suggests using a reliable email migration method that ensures data integrity and security throughout the entire process to simplify the process, avoid data loss, and ensure a seamless transition. Moreover, extract and save IMAP account emails in various file formats such as – PST, MSG, HTML, MHTML, EML, EMLX, MBOX, etc. with complete security. It also works on all Windows versions (up to Windows 11).
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