Mark Email Read in Gmail
To mark an email or emails read in Gmail:
Open a web browser, and sign in to Gmail. Select the check box next to the messages that you want to mark as read. Or, check a range of messages. If you want certain messages, search for the desired attributes and mark as read within the search results. You can also check all messages in the current label or search results for marking. Go to the toolbar and select Mark as read. Every message that you selected is marked as read.
The Hotkey Shortcut
There’s a quick way to mark messages as read using a hotkey. It takes a minute or two to set up, but it can be a time-saver in the future.
Go to your Gmail inbox. Select Settings. Choose See All Settings. Go to the General tab. In the Keyboard shortcuts section, select Keyboard shortcuts on. Then, select Save Changes. Go to your inbox, then select the messages that you want to mark as read. Hold Shift and press i to mark the messages as read. The hotkey to mark messages as read is Shift+I.
Mark All Mail Read in a Label or View in Gmail
To mark as read all messages in a Gmail label or view:
Open the label that you want to work in, and make sure that no messages are checked. If hotkeys are enabled, press *n to deselect all mail. Go to the toolbar and select More (the icon is three stacked dots). With hotkeys, you can also press . (dot) to open the More menu. Select Mark all as read. To use the keyboard, press Down followed by Enter. All messages in the label are marked as read.