Hello
When Mbox Split feature was not implemented, I wrote a code and comparing it with your new 24.6 split method, yours seems to be about 10 times slower!
May I share my code so you kindly pass it to the devs. might …...the Aspose Email dll with the latest .net 4.0 build and run again...replace Aspose.Email.dll with the latest build 24.6 for .net 4.0 full...