facilmap/leaflet/assets/icons/glyphicons/envelope.svg

<svg xmlns="http://www.w3.org/2000/svg" width="1200" height="1000"><path d="M25 0h1150q10 0 12.5 5t-5.5 13L618 585q-8 8-18 8t-18-8L18 18q-8-8-5.5-13T25 0zm-7 218l264 264q8 8 8 18t-8 18L18 782q-8 8-13 5.5T0 775V225q0-10 5-12.5t13 5.5zm900 264l264-264q8-8 13-5.5t5 12.5v550q0 10-5 12.5t-13-5.5L918 518q-8-8-8-18t8-18zM818 618l364 364q8 8 5.5 13t-12.5 5H25q-10 0-12.5-5t5.5-13l364-364q8-8 18-8t18 8l164 164q8 8 18 8t18-8l164-164q8-8 18-8t18 8z"/></svg>