PHP Email sign-up emails going to spam folder [duplicate] - php

Question

This question already has answers here:
Why is my e-mail still being picked up as spam? Using mail() function
(5 answers)
Closed 9 years ago.
first time post. I did read through the site on this question but I didn't find the answer or didn't realize I found the answer. I'm putting a simple PHP email sign-up box on a web site. Here is my code:
enter code here
function spamcheck($field)
{
$field=filter_var($field, FILTER_SANITIZE_EMAIL);
if(filter_var($field, FILTER_VALIDATE_EMAIL))
{
return TRUE;
}
else
{
return FALSE;
}
}
$recipient = "mymail#mydomain.com";
$subject = "Email subscription list";
$sender = $recipient;
$subscription = $_REQUEST['subscription'];
if (isset($_REQUEST['emaillist']))
$mailcheck = spamcheck($_REQUEST['emaillist']);
if ($mailcheck==FALSE)
{
echo "Invalid input";
}
else
{
$body .= "Email: ".$_REQUEST['emaillist']." \n";
$body .= "Subscribe: ".$_REQUEST['subscription']." \n";
if ($subscription == "subscribe")
{$location = "thankyou.html";}
else {$location = "thankyou2.html";};
mail( $recipient, $subject, $body, "From: $sender" ) or die ("Mail could not be sent.");
header( "Location: $location" ); } ?>
The emails go to the spam folder using either my gmail or an email on the site's domain. I think it's because the subject and recipient are the same, but it could simply be a matter of telling our site host to allow these mails through. Any help/suggestions are appreciated and thank you in advance.

Answer 1

$sender = $recipient;
Since you are sending an email to yourself, create a filter to prevent mails from yourself going into spam. Creating filters is explained here