You can use mail() function and please check following link Click here.
Try following code
<?php
$to='abc@email.com';
$subject='Subject';
$message='your message';
$header='From: webmaster@example.com' . "
" .
'Reply-To: webmaster@example.com' . "
" .
'X-Mailer: PHP/' . phpversion();
mail($to,$subject,$message,$headers);
?>
Please add some relevant code in your question to get better solutions.
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