Mark read and unread

src/composition/useEmailSelection.js

@@ -5,12 +5,22 @@ export const useEmailSelection = function(){
 
   let emailSelection = reactive({
     emails: emails,
-    toggle: function(id) {
+    toggle(id) {
       if(this.emails.has(id)) {
         this.emails.delete(id)
       } else {
         this.emails.add(id);
       }
+    },
+    markRead(){
+      this.emails.forEach(email => {
+        email.read = true
+      })
+    },
+    markUnread(){
+      this.emails.forEach(email => {
+        email.read = false
+      })
     }
   })