Mail

<svg
    xmlns="http://www.w3.org/2000/svg"
    width="512"
    height="512"
    viewBox="0 0 512 512"
>
    <linearGradient
        id="a"
        x1="233.5"
        x2="233.5"
        y1="436"
        y2="35.499"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#00b59c" />
        <stop offset="1" stop-color="#9cffac" />
    </linearGradient>
    <linearGradient
        id="b"
        x1="258.25"
        x2="258.25"
        y1="481"
        y2="31"
        gradientUnits="userSpaceOnUse"
    >
        <stop offset="0" stop-color="#c3ffe8" />
        <stop offset=".997" stop-color="#f0fff4" />
    </linearGradient>
    <path
        fill="url(#a)"
        d="M377 256c-49.629 0-90 40.371-90 90s40.371 90 90 90 90-40.371 90-90-40.371-90-90-90zm52.5-.901c10.201 6 22.5-1.5 22.5-12.9V46c0-4.2-1.8-7.8-4.501-10.501L226 136 4.501 35.499C1.8 38.2 0 41.8 0 46v270c0 8.543 7.56 15 15 15h245.9c8.399 0 13.2-6.301 14.399-11.4 17.147-66.01 91.974-99.501 154.201-64.501z"
    />
    <path
        fill="url(#b)"
        d="M377 211c-74.7 0-135 60.3-135 135s60.3 135 135 135 135-60.3 135-135-60.3-135-135-135zm53.101 166.8c5.7 6 5.7 15.3 0 21.299-5.444 5.444-15.517 5.787-21.301 0l-31.8-31.8-31.8 31.8c-5.784 5.788-15.861 5.439-21.301 0a15.402 15.402 0 0 1 0-21.299l31.8-31.8-31.8-31.8c-5.7-6-5.7-15.3 0-21.301 6-5.7 15.3-5.7 21.301 0l31.8 31.8 31.8-31.8c6-5.7 15.3-5.7 21.301 0 5.7 6 5.7 15.3 0 21.301l-31.8 31.8zM437 31H15c-4.2 0-7.8 1.8-10.499 4.499l212.698 154.123a15 15 0 0 0 17.603 0L447.499 35.499C444.8 32.8 441.2 31 437 31z"
    />
</svg>