Some time people use their Mac computer for specific purpose and they want some required applications to run and ready at start-up automatically or even you don’t use Mac for specific work you may need to run some programs on start-up like Mail, Chat, Music and more… so Mac OS X gives you an option to specify applications to run at start-up.
Let’s see how to add or delete applications/programs from Mac OS X start-up.
Click on Apple icon and click on System Preferences
Click on Accounts icon under System category
Click on Login Items tab and then Click the Add (+) button.
Click on Applications under Places category then select application (e.g. Mail) of your choice from the list and Click on Add (+) button. Now when you restart your Mac then you will see the startup changes that you have made.
Delete start-up application on Mac
Simply after step-3 select the application under Login Items that you want to delete and Click on Delete (-) button