Remove the [Site Name] Prefix From Email Subjects

Strips the "[Your Site Name]" WordPress puts at the start of its email subjects, which looks dated and wastes space on phones.

WPIDE Team
Updated October 28, 2026

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Code

add_filter( 'wp_mail', function ( $atts ) {
    $prefix = '[' . wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES ) . ']';

    if ( 0 === strpos( (string) $atts['subject'], $prefix ) ) {
        $atts['subject'] = ltrim( substr( $atts['subject'], strlen( $prefix ) ) );
    }

    return $atts;
}, 1 );

Notes

Only removes the prefix when it matches your site title exactly.

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Details

Code type: PHP
Category: Email
Runs: Run everywhere
Requires: Nothing beyond WordPress
Version: 1
Updated: October 28, 2026

Remove the [Site Name] Prefix From Email Subjects

Code

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Remove the [Site Name] Prefix From Email Subjects

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