galaxy s7 making notification sound when notifications turned off

magenta4432479

    I have a galaxy s7 and I am getting a notification sound when I receive an email.  I have notifications turned off for all apps, I have tried setting the phone to do not disturb, muting the volume completely, restarting the phone - but it still makes a noise every time I get an email.  In the advanced notification setting I have blocked email notifications.  But it still makes a noise every time I get an email.  This started suddenly at 4AM - I have had the phone since May 2017.

     

    Any suggestions are appreciated

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