feature for email app

[dinhokusanagi]

the deepin email application does not have the possibility of starting minimized along with the system in the taskbar, every time the system is started and the application opens I have to close it for it to stay in the bar. I've tried several commands in the .config folder without success. I've concluded that it's an unavailable feature, this is a very useful feature and I'd like it to be added if possible.

[BLumia]

cc @meiyixiang