JSSSS

My apologizes if this has been discussed before. I'm new to this forum but I did some searches and couldn't find anything. Several times a day my IPhone beeps with a generic message from Evernote that promotes Evernote. Either I should 'Remember the Milk' or something else to do with Evernote. I have set my options to 'not receiving reminder emails'. These aren't emails but messages that appear, beep and disappear in a few seconds. Can someone help me to stop them. Thanks