Sometimes users need to move to a new system or email account and want to take their Outlook calendar with them. But when the OST file is inaccessible, normal export options fail. In such situations, you must extract calendar from OST File using a trusted tool that works without Outlook. The MailConverterTools OST to PST Converter meets this requirement because it scans the OST file, displays all items, and gives you the option to extract calendar data in ICS format. This ensures your schedules, reminders, and meetings are preserved exactly as they were. It also supports filtering, making the process faster when dealing with large mailboxes. This software offers several advanced filtering options. Users can remove duplicate items, convert or back up emails without attachments, split the resulting PST file, and even set a custom name for the output folder. This makes the conversion process more flexible and efficient.