Send email with Content-Type text/plain

I have problem with emails in WordPress. I have to send message with Content-Type is text/plain, but in WordPress default Content-Type is text/html. That change chars like & to &.

How can I change Content-Type? Please help.

Answers:

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Method 1

You didn’t say how you’re sending emails, but if you’re using wp_mail, this is how you change the type to text/plain:

function wp_set_mail_plaintext() {
    return 'text/plain';
}
add_filter( 'wp_mail_content_type', 'wp_set_mail_plaintext' );

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