메일발송에 대해 질문있습니다! 채택완료

안녕하십니까 고수님들 

하루하루 실력부족으로 늙어가는 고급지게 입니다..

지금 현재 메일발송 폼을 만들어서 쓰고있는데요

메일이 gmail에서는 자동으로 스팸처리를 해버리는데..

현재 네이버 다음 등등 국내 이메일은 잘 오고 있습니다ㅠㅠ

영카트 결제 후 주문내역 안내메일은 안걸러지고 잘 오더라구요ㅠㅠ

제가 만든 메일 폼이랑 주문내역 폼이랑 무슨 차이 일까요 ?

지메일에선 

'emailaddress'에서 보낸 메일이 아닐 가능성이 있습니다. 라고 떠요ㅠㅠ

살려주세요

<?php
define('_INDEX_', true);
include_once('../common.php');
include_once(G5_LIB_PATH.'/mailer.lib.php');
include_once(G5_CAPTCHA_PATH.'/captcha.lib.php');
$file = array();
for ($i=1; $i<=count($_FILES); $i++)
{
if ($_FILES["file".$i][name])  {
$file[]= attach_file($_FILES["file".$i][name], $_FILES["file".$i][tmp_name]);
    }
}

$content=<<<HEREDOC
   <table style="margin:auto; padding:0; width:70%; border:2px solid #2949af; font-size:15px; line-height:40px; font-family:'NANUMGOTHIC'; border-collapse:collapse;">
   <tr style="border-bottom:1px solid #2949af;">
   <td colspan="2" style="height:130px; text-align:center; border-bottom:1px solid #fff; background:url('../img/main_header_bg.jpg') #2949af repeat-x;"><img src="http://wbff.impmedia.kr/img/main_logo.png" alt="WBFF ASIA"></td>
   </tr>
    <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">한글이름</td><td style="padding:0 30px; height:30px; color:#000;">$k_nm</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">First Name</td><td style="padding:0 30px; height:30px; color:#000;">$first_nm</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">Last Name</td><td style="padding:0 30px; height:30px; color:#000;">$last_nm</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">생년월일</td><td style="padding:0 30px; height:30px; color:#000;">$birth</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">키(cm)</td><td style="padding:0 30px; height:30px; color:#000;">$height</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">몸무게(kg)</td><td style="padding:0 30px; height:30px; color:#000;">$weight</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">성별</td><td style="padding:0 30px; height:30px; color:#000;">$Gender</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">우편번호</td><td style="padding:0 30px; height:30px; color:#000;">$zip_code</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">주소</td><td style="padding:0 30px; height:30px; color:#000;">$Address1</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">상세주소</td><td style="padding:0 30px; height:30px; color:#000;">$Address2</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">휴대폰번호</td><td style="padding:0 30px; height:30px; color:#000;">$m_num</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">이메일 주소</td><td style="padding:0 30px; height:30px; color:#000;">$e_addr</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">1번째 참가 종목 ( 24만원 )</td><td style="padding:0 30px; height:30px; color:#000;">$first_select</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">2번째 참가 종목 ( + 5만원 )</td><td style="padding:0 30px; height:30px; color:#000;">$second_select</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">개인포스터제작 (+ ₩ 40,000)</td><td style="padding:0 30px; height:30px; color:#000;">$third_select</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">개인포토그래퍼 촬영 (+ ₩ 90,000)</td><td style="padding:0 30px; height:30px; color:#000;">$fourth_select</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">클래식 출전여부</td><td style="padding:0 30px; height:30px; color:#000;">$classic_select</td>
   </tr>
   <tr style="border-bottom:1px solid #2949af;">
      <td style="padding:0 30px; width:240px; height:40px; background:#fff; color:#2949af; border-bottom:1px solid #2949af; font-weight:600; ">무대소개시 자기소개 문구</td><td style="padding:0 30px; height:30px; color:#000;">$ABOUT</td>
   </tr>
   <tr>
      <td colspan="2" style="padding:0 30px; height:80px; color:#2949af; font-size:30px;">$final_amount</td>
   </tr>
  </table>
HEREDOC;

mailer($config['cf_admin_email_name'], $config['cf_admin_email'], $e_addr, '참가신청', $content,1,$file);



alert('참가신청 완료되었습니다.','/shop');
?>