{"id":3165,"date":"2015-12-01T10:52:15","date_gmt":"2015-12-01T10:52:15","guid":{"rendered":"https:\/\/unihost.com\/help\/?p=3165"},"modified":"2023-01-19T13:58:29","modified_gmt":"2023-01-19T10:58:29","slug":"php-script-to-send-email-using-smtp","status":"publish","type":"post","link":"https:\/\/unihost.com\/help\/php-script-to-send-email-using-smtp\/","title":{"rendered":"PHP script to send email using SMTP"},"content":{"rendered":"

Despite php already having a mail function called mail(), SMTP sendmail script is preferable. Most importantly, it allows you to bypass the antispam filters, most of which which are set to block the PHP-mail by default.<\/span><\/p>\n

<\/p>\n

With an SMTP script, you can completely disguise the letter and make everyone think that it was not sent from with a mail() function.<\/span><\/p>\n

How to write a sendmail\u00a0SMTP script<\/span><\/h2>\n

Creating a function to work with an open SMTP-connection<\/span><\/h3>\n
<?\r\nfunction get_data($smtp_conn)\r\n{\r\n$data=\"\";\r\nwhile($str = fgets($smtp_conn,515))\r\n{\r\n$data .= $str;\r\nif(substr($str,3,1) == \" \") { break; }\r\n}\r\nreturn $data;\r\n}\r\n?><\/span><\/pre>\n
Creating the letter<\/span><\/h3>\n
<?\r\n$header.=\"X-Mailer: The Bat! (v3.99.3) Professional\\r\\n\"; \r\n$header.=\"Reply-To: =?utf-8?Q?\".str_replace(\"+\",\"_\",str_replace(\"%\",\"=\",urlencode('sender'))).\"?= <sender@domain.com>\\r\\n\";\r\n<\/span><\/pre>\n
Change\u00a0utf-8<\/span>\u00a0 to the encoding system you are using, sender<\/span> – to the sender name, and\u00a0sender@domain.com<\/span> – to the email you are going to send the letter from.<\/span><\/p>\n
$header.=\"X-Priority: 3 (Normal)\\r\\n\";\r\n$header.=\"Message-ID: <172562218.\".date(\"YmjHis\").\"@domain.com>\\r\\n\";<\/span><\/pre>\n
Change\u00a0@domain.com<\/span>\u00a0to the domain where your mail is located.<\/span><\/p>\n
$header.=\"To: =?windows-1251?Q?\".str_replace(\"+\",\"_\",str_replace(\"%\",\"=\",urlencode('recipient'))).\"?= <recipient@domain.ru>\\r\\n\";<\/span><\/pre>\n
Change\u00a0<\/span>utf-8<\/span>\u00a0to the encoding system that you are using,\u00a0<\/span>recipient<\/span>\u00a0to the name of the letter’s recipient, and \u00a0<\/span>recipient@domain.com<\/span> \u2014 to their domain<\/span><\/p>\n
$header.=\"Subject: =?windows-1251?Q?\".str_replace(\"+\",\"_\",str_replace(\"%\",\"=\",urlencode('check'))).\"?=\\r\\n\";\r\n $header.=\"MIME-Version: 1.0\\r\\n\";\r\n $header.=\"Content-Type: text\/plain; charset=windows-1251\\r\\n\";\r\n $header.=\"Content-Transfer-Encoding: 8bit\\r\\n\";\r\n ?><\/span><\/pre>\n
Change check<\/span> to the letter’s subject.<\/span><\/p>\n
$text=\"Hi, how do you do?\";<\/span><\/pre>\n
Change\u00a0 Hi, how do you do?\u00a0<\/span><\/span>to your letter’s text.<\/span><\/span><\/p>\n
Sending the letter<\/span><\/h3>\n
<?\r\n$smtp_conn = fsockopen(\"smtp.mail.ru\", 25,$errno, $errstr, 10);\r\n$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,\"EHLO johnny\\r\\n\");<\/span><\/pre>\n
If you want to, you can change\u00a0<\/span>johnny<\/span>\u00a0to anything else. But it is only an ID the server will assign to your PC, so it’s not important.<\/span><\/p>\n
$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,\"AUTH LOGIN\\r\\n\");\r\n$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,base64_encode(\"login\").\"\\r\\n\");<\/span><\/pre>\n
Change\u00a0login<\/span>\u00a0to your login on the mail server.<\/span><\/p>\n
$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,base64_encode(\"password\").\"\\r\\n\");<\/span><\/pre>\n
Change\u00a0password<\/span>\u00a0to your password on the mail server.<\/span><\/p>\n
$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\n$size_msg=strlen($header.\"\\r\\n\".$text);\r\nfputs($smtp_conn,\"MAIL FROM:<sender@domain.com> SIZE=\".$size_msg.\"\\r\\n\");<\/span><\/pre>\n
Change\u00a0sender@domain.com\u00a0to the mailing address that will be used to send the letter.<\/span><\/span><\/span><\/p>\n
$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,\"RCPT TO:<recipient@domain.com>\\r\\n\");<\/span><\/pre>\n
Change\u00a0recipient@domain.com<\/span>\u00a0to the recipient’s mailing address.<\/span><\/p>\n
$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,\"DATA\\r\\n\");\r\n$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,$header.\"\\r\\n\".$text.\"\\r\\n.\\r\\n\");\r\n$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\nfputs($smtp_conn,\"QUIT\\r\\n\");\r\n$data = get_data($smtp_conn);\r\n\/\/$code = substr($data,0,3);\r\n\/\/echo ($code);\r\n?>\r\n<\/span><\/pre>\n
This script can be used to send mail from any hosting or a server that supports PHP.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"
Despite php already having a mail function called mail(), SMTP sendmail script is preferable. Most importantly, it allows you to bypass the antispam filters, most of which which are set to block the PHP-mail by default.<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[158],"tags":[273,287,149],"class_list":["post-3165","post","type-post","status-publish","format-standard","hentry","category-dedicated-servers","tag-email","tag-php-script","tag-smtp"],"yoast_head":"\nPHP script to send email using SMTP - Unihost.FAQ<\/title>\n<meta name=\"description\" content=\"PHP script to send email using SMTP allows to protect your letters of being qualified like spam.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/unihost.com\/help\/php-script-to-send-email-using-smtp\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PHP script to send email using SMTP - Unihost.FAQ\" \/>\n<meta property=\"og:description\" content=\"PHP script to send email using SMTP allows to protect your letters of being qualified like spam.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/unihost.com\/help\/php-script-to-send-email-using-smtp\/\" \/>\n<meta property=\"og:site_name\" content=\"Unihost.FAQ\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/unihost\/\" \/>\n<meta property=\"article:published_time\" content=\"2015-12-01T10:52:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-01-19T10:58:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/unihost.com\/help\/minio.php?.\/unihost-logo-alt.png\" \/>\n\t<meta property=\"og:image:width\" content=\"250\" \/>\n\t<meta property=\"og:image:height\" content=\"141\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Unihost Support\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@unihost\" \/>\n<meta name=\"twitter:site\" content=\"@unihost\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Unihost Support\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/unihost.com\/help\/php-script-to-send-email-using-smtp\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/unihost.com\/help\/php-script-to-send-email-using-smtp\/\"},\"author\":{\"name\":\"Unihost Support\",\"@id\":\"https:\/\/unihost.com\/help\/#\/schema\/person\/bb5ae95f38577c920e6a7507888b715a\"},\"headline\":\"PHP script to send email using SMTP\",\"datePublished\":\"2015-12-01T10:52:15+00:00\",\"dateModified\":\"2023-01-19T10:58:29+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/unihost.com\/help\/php-script-to-send-email-using-smtp\/\"},\"wordCount\":265,\"publisher\":{\"@id\":\"https:\/\/unihost.com\/help\/#organization\"},\"keywords\":[\"email\",\"php script\",\"smtp\"],\"articleSection\":[\"02. 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