Your Mac's Skype notifications can be distracting when you are trying to remain focused on another task -- like studying for an exam or finishing a big research paper. The "Do Not Disturb" status will temporarily silence all sound notifications, while using your Skype Preferences menu will disable all visual and sound notifications entirely.

Temporarily Disable Notifications with "Do Not Disturb"

If you are only needing the notifications turned off temporarily -- for example, the hour it will take you to finish studying -- you can simply change your status setting to "Do Not Disturb." With this status, your contacts will see you online and can still send instant messages or call you, but you will only be alerted with a visual pop-up. All sound notifications are disabled.

Permanently Disable Notifications

If a temporarily disabling of your notifications with "Do Not Disturb" isn't enough, you can disable notifications permanently instead -- at least until you decide to turn them back on. While signed in to your Skype account, select "Skype" and then "Preferences" and click "Notifications." Switch to the "Overview" tab and uncheck the notifications you wish to disable.