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Please have a look at the following source code that loads an appointment from ICS file and adds it to the PST. Please let us know if you have any additional query/inquiry related to Aspose.Email.
Appointment appointment = Appointment.Load(“Test.ics”); <o:p></o:p>
// Save the appointment to disk in ICS
MemoryStream memStream = new MemoryStream();
MailMessage mailMsg = new MailMessage();
MapiMessage mapiMsg = MapiMessage.FromMailMessage(mailMsg);
// Create new PST
PersonalStorage pst = PersonalStorage.Create("TestCalendar.pst", FileFormatVersion.Unicode);
// Add new folder "Calendar"
FolderInfo folderInfo =