How long does it take to migrate IMAP mailboxes to EML format?

Migration of IMAP mailboxes to EML format does not have a fixed time because it depends on several technical and environmental factors. On average, small mailboxes with a few hundred emails may take only a few minutes, while larger mailboxes containing tens of thousands of messages can take several hours or even longer. Speed is influenced by internet bandwidth, server response time, attachment sizes, and the efficiency of the migration tool being used. Using optimized software with multi-threading can significantly reduce migration time compared to manual export methods. Additionally, filtering data by date range or folders can further shorten the process. For enterprise-sized mailboxes, migration to EML may take several hours to a full day depending on server load and network stability. It is always recommended to perform migrations during off-peak hours and ensure stable connectivity to avoid interruptions or slowdowns during the conversion process. Proper planning helps achieve faster and more reliable results overall in most real world scenarios.