google-material-design-icons/android/notification/sms/materialiconsoutlined/black/res/drawable/outline_sms_24.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24"
    android:tint="?attr/colorControlNormal">
  <path
      android:fillColor="@android:color/white"
      android:pathData="M20,2L4,2c-1.1,0 -2,0.9 -2,2v18l4,-4h14c1.1,0 2,-0.9 2,-2L22,4c0,-1.1 -0.9,-2 -2,-2zM20,16L5.17,16L4,17.17L4,4h16v12zM7,9h2v2L7,11zM15,9h2v2h-2zM11,9h2v2h-2z"/>
</vector>