One thing I find myself doing a lot is trying to navigate my e-mails using my keyboard. I have found the "caret" showing current focused e-mail, in Compact dark theme, is a blue indicator and that can be moved up and down using the keyboard. You can also use Enter to read the currently selected e-mail.
What bothers me is that Spacebar isn't used to select the currently focused e-mail. The Spacebar has more of a page down functionality. Nothing has annoyed me more than having to select a group of e-mails using my mousepad on my laptop; not to mention it is very inefficient to have to position the cursor precisely and hope you don't accidentally start dragging the item instead of selecting the check box.
**So my question is, how can I use my keyboard to select e-mails in Gmail -mail? **
Also, how I can delete the selected e-mails using my keyboard without using tab, if possible?