PHP form sending email in spam and have problems whan refresh page it send email again
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How do you make sure email you send programmatically is not automatically marked as spam?
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How to send email by using javascript or jquery
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Does page reload ever cause post?
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PHP mail function is not sending any messages
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sending mail with php & escaping hotmails junk folder
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Fighting Spam - What can I do as an: Email Administrator, Domain Owner, or User?
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PHP Mail Encodes Subject Line
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Stop cron from mailing the user
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PHP mail / PEAR mail
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Obfuscate spam in page title as well
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PhP Contact form in Wordpress
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Check if email exist php
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PHP - Redirect and send data via POST
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How can I send an email using PHP?
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PHP mail function doesn't complete sending of e-mail
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How to check if an email address is real or valid using PHP
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Failed to send HTML mails using PHP mail()