Simple MAILTO uses default email client - Usually requires auth
Code:
<form method="POST" action="Mailto:YOUR-EMAIL">
<p><input type="text" name="T1" size="20"></p>
<p><input type="text" name="T2" size="20"></p>
<p><input type="text" name="T3" size="20"> </p>
<p><textarea rows="2" name="S1" cols="20"></textarea></p>
<p><input type="submit" value="Submit" name="B1"></p>
</form>
, Tkey