编辑文件：envelope.svg
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <path fill-rule="evenodd" clip-rule="evenodd" d="M3 7c0-1.1.9-2 2-2h14a2 2 0 0 1 2 2v10a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V7Zm2-.5h14c.3 0 .5.2.5.5v1L12 13.5 4.5 7.9V7c0-.3.2-.5.5-.5Zm-.5 3.3V17c0 .3.2.5.5.5h14c.3 0 .5-.2.5-.5V9.8L12 15.4 4.5 9.8Z" /> </svg>
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