I have owned the mail program since 2000.
With 24 years of use, a criticism must be made to you.
1- The programming skills of the first generation of the program were exceptionally better than those of 2024.
2- The introduction of new features in recent years has worsened the quality of the speed of execution of the program.
3- The use of ram and cpu times has increased inexplicably. A 2000 CPU performed better on your 2000 application, That a 2024 CPU on the 2024 application...
4- The "Message Base Index" that starts from ZERO every time the program is started. This testifies to a real bad engineering of the application. This system dramatically slows down your application and makes the experience of using TheBat very bad.
5- The integration within TheBat to view particular file types is interesting, but right now it is better to save the attachments, scan them with the antivirus and then open them.

I understand the need to innovate, but innovating does not mean programming without optimization: you cannot build a program that requires an intel I9 to make 2+2 in 2024, while in 2000 an intel 8086 was enough...

I will continue to use your application, but honestly more than innovation it would take more optimization.

Best regards