The safest and easiest way to migrate NSF files to Office 365 without data loss is by using a professional NSF to Office 365 converter tool. It moves emails, contacts, and other data directly while keeping everything intact, including attachments and folder structure.

Manual methods like IMAP or converting NSF to PST are available, but they’re complex, time-consuming, and risk missing or corrupting data—especially in bulk transfers. For quick, secure, and error-free migration, a reliable tool is your best option.