Filter

rpress_email_headers

Updated 30 Oct 2026

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Parameters
Return value
Example
Notes
Source
See also

Filters the headers passed to wp_mail for a RestroPress email.

Applied at the end of RPRESS_Emails::get_headers(). The default string contains From, Reply-To and Content-Type headers, each ending with a CRLF. The result is passed to wp_mail() when the email is sent.

Parameters#

Parameter	Type	Description
`$headers`	`string`	The header string.
`$emails`	`RPRESS_Emails`	The RPRESS_Emails instance sending the email.

Return value#

string. The header string.

Example#

function my_email_headers( $headers, $emails ) {
	return $headers . "Bcc: manager@example.com\r\n";
}
add_filter( 'rpress_email_headers', 'my_email_headers', 10, 2 );

Notes#

Each header line should end with a CRLF, as in the default value.

Source#

Applied in:

includes/emails/class-rpress-emails.php (line 189), in RPRESS_Emails::get_headers()