update send modal

app/views/icons/_mail_plus.html.erb

@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" class="<%= local_assigns[:class] %>" width="44" height="44" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round">
+  <path stroke="none" d="M0 0h24v24H0z" fill="none" />
+  <path d="M12 19h-7a2 2 0 0 1 -2 -2v-10a2 2 0 0 1 2 -2h14a2 2 0 0 1 2 2v5.5" />
+  <path d="M16 19h6" />
+  <path d="M19 16v6" />
+  <path d="M3 7l9 6l9 -6" />
+</svg>