document.querySelector("#messaging-view > div > md-content > div > gv-conversation-list > md-virtual-repeat-container > div > div.md-virtual-repeat-offsetter > div:nth-child(1) > div > gv-text-conversation-item > gv-conversation-item > div").click()
var interval = setInterval(function() {
	console.log('ping');
	const el = document.querySelector("md-menu")
				.lastElementChild
				.querySelector("md-menu-content > md-menu-item:nth-child(2) > button");
	if (!el) {
		console.log('done')
		clearInterval(interval)
	} else {
		console.log('click')
		el.click()
	}
}, 500)