Switching email platforms is never easy, especially when you’re dealing with decades-old Pegasus Mail data. I was hesitant to migrate Pegasus Mail to Office 365 because I feared losing important client communications. Office 365 offers strong security and compliance, but the migration itself was the biggest concern. I eventually tried the SysInfo IMAP Backup Tool, which connects Pegasus via IMAP and transfers everything directly to Microsoft 365. What stood out was the duplicate removal feature, which helped clean up my mailbox before migration. The entire process was automated and saved a lot of time compared to manual exporting. For anyone stuck on Pegasus, this approach really simplifies the transition. Apart from this, the software lets you export the first 50 emails from each folder, so you can check out how the tool works before deciding to buy the full version.