Botão Email HTML
<form action="mailto:[email protected]"method="post"enctype="text/plain">
<input class="btn" type="submit" value="Submit">
</form>
Cyber-Ninja
<form action="mailto:[email protected]"method="post"enctype="text/plain">
<input class="btn" type="submit" value="Submit">
</form><button onclick= "document.location = 'mailto:[email protected]'"">mail me
</button><button onclick= "document.location = 'mailto:[email protected]'"">mail me
</button>