72x72 gmail

You're looking for a 72x72 pixel Gmail icon!

Here it is:

<svg width="72" height="72">
  <g fill="none" stroke="#4285f4" stroke-width="2">
    <path d="M18 16.9L18 55.1L72 55.1L72 16.9L18 16.9Z" />
    <path d="M36 36L36 36L36 36L36 36Z" />
  </g>
</svg>

You can copy and paste this SVG code into your HTML file or use it as an image.