Can you make the background color set up in one go, not by each raw? It is time-consuming.
Why do you use the American way for dates? Can you give an option at least plus add 24h. We Europeans and also Japanese use that way, not American.
Image resize - can you make it on the spot, something like in GetResponse. Right now I have to wait for loading another page or popup to resize by guessing the size actually. Upon doing so it doesn't look like the image is resized. You have cool features in that popup window but resize should be on the spot by using the frame and resize with the click of the mouse.
Can you make Autoresponder and Design as one (again GR comes to my mind) I click Autoresponder and do all the designs the same as I would do as Newsletter, schedule dates and time, and a viola?
You need more templates as well. The choice of categories brings me to the blanc page. One must choose All to see something. I know you get there at some point.

I'm sorry if I try to be too picky or compare too much to another company, but I'd like to use Inbox exclusively as easily as possible. Thank you