In Inbox or any other mail folders, check boxes can be added adjacent to every message. It would make users to easily select messages and perform action like delete or move in one stroke. Currently we are able to perform this functions by ctrl and shift keys. Still this feature would enhance the user experience. [....]

On occasions there are a lot of files in a single message. It can be burdensome to save these one by one. Therefore you should add a function with which the user can simply download all of the attachments with one click. [....]

I really think it is about time that GMX allowed us to copy and cut text by left clicking with the mouse. [....]

When scrolling through pages the pages do not return to the top. For example, when I go from page 1 to page 2, page 2 opens at the bottom by the page numbers instead of at the top. This makes it awkward since you have to scroll to the top to read the messages and then back down to the bottom to change the page. [....]

GMX should add more colours to their themes eg. Orange, red, black etc. Those available are becoming dull. [....]