Google offers an option to simplify toolbar on Gmail for web: How it works
Google is now rolling out a new simple toolbar option on Gmail, allowing users to view only essential options as part of the toolbar on the web version. First reported by 9To5Google, the simple toolbar shows limited options for quick actions atop the email, while the rest of the actions move to the drop down section. The feature is rolling out gradually, and is currently limited to select users.
Once the new feature is available, the user would be greeted with “Your new, simpler toolbar” prompt upon opening an email on the web version of Gmail. The prompt says, “Now it’s easier to focus on common tasks. Find other actions under More.”