How to write wp_mail without header

3 comments

1. Yes, If you check the text below the parameter $headers says its (string or array) (optional)

   $to
   (string or array) (required) The intended recipient(s). Multiple recipients may be specified using an array or a comma-separated string.
   Default: None
   
   $subject
   (string) (required) The subject of the message.
   Default: None
   
   $message
   (string) (required) Message content.
   Default: None
   
   $headers
   (string or array) (optional) Mail headers to send with the message. (advanced)
   Default: Empty
   
   $attachments
   (string or array) (optional) Files to attach: a single filename, an array of filenames, or a newline-delimited string list of multiple filenames. (advanced)
   Default: Empty
   

   Source: http://codex.wordpress.org/Function_Reference/wp_mail#Parameters

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2. Yes you can use it :

   <?php wp_mail( $to, $subject, $message); ?>
   

   $headers and $attachments are empty by default (they are optionnal).

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3. yes you can use like this

   <?php wp_mail( $to, $subject, $message); ?>
   

   $headers is an optional parameter

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