WordPress – Set Sender – Prevent “Via default@domain.com”

2 comments

1. You can automatically set the sender by adding this code to functions.php (or putting it in a plugin):

     # set the sender after PHP builds the phpmailer object during a wp_mail call
     add_action( 'phpmailer_init', 'my_phpmailer_init' );
     function my_phpmailer_init( $phpmailer ) {
       $phpmailer->Sender = $phpmailer->From;
     }
   

   This has the same effect as Talon’s answer, but avoids editing core WordPress files. This way the change survives a WordPress upgrade.

   https://codex.wordpress.org/Plugin_API/Action_Reference/phpmailer_init

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2. So after a bit of searching I managed to find the bit of code that needs to be changed.

   Open the file:
   /wp-includes/pluggable.php

   Find the lines that look like this:

   // Plugin authors can override the potentially troublesome default
   $phpmailer->From     = apply_filters( 'wp_mail_from'     , $from_email );
   $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name  );
   

   And add the following:

   $phpmailer->Sender   = apply_filters( 'wp_mail_from'     , $from_email );
   

   So it should now look like this:

   // Plugin authors can override the potentially troublesome default
   $phpmailer->From     = apply_filters( 'wp_mail_from'     , $from_email );
   $phpmailer->FromName = apply_filters( 'wp_mail_from_name', $from_name  );
   $phpmailer->Sender   = apply_filters( 'wp_mail_from'     , $from_email );
   

   This will prevent the “via unwanted@host.net” and will not just come from you.

   BEWARE:
   This may cause spam issues IF your email address is different from your domain name.
   ie:

   BAD: noreply@example.com and your website is www.mysite.com
   GOOD: noreply@mysite.com and your website is www.mysite.com
   

   I hope this saves someone out there an hour or 2 like I just wasted.

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