Mail problems

Level 2

I am getting frustrated with my TPG mail. Especially as I do get quite a lot of mail. It takes a long time to load some pages, or if I want to delete some mail, I press delete and it doesn't do anything. If it cannot be resolved I will go to another email program. I don't have any problem with my internet service or any other programs/apps. I use a pc with a Windows 10 OS. Thank you!