[Marco Arrichiello]

Hello. I want to disable vibrate and sound for Hotmail and Gmail apps. But if I disable notifications, it completely stop to notify mails.
I would like to have just small icons in the upper left corner of the screen. Any way to do this, on Marshmallow?

[AlphaTango414]

To my knowledge, you are unsure let to do what you are asking. You can set individual apps to receive or not to receive notifications but that would keep it from showing up in the notification bar.

[hallux]

At least for the Gmail app, set the notification sound to none and deselect vibration. You'll get the notification tray icon but no sound or vibration.