Appointments not sending notifications to providers

I have several service providers but when a user makes an appointment with a service provider he is not receiving an email in forming him about the requested service.

I’ve tried setting up SMTP on the site. Auto confirm, sends the confirmation to admin account (though has issue with mail delivery from unauthorized sender apparently).

  • James Morris
    • WordPress Enthusiast

    Hello Oscar,

    As noted in chat, your ticket has be escalated to our SLS Team for further investigation. Please make sure you keep Support Staff Login enabled so they can access your site and perform some tests.

    Thank you for your patience while we sort through this issue.

    Best regards,

    James Morris

  • Panos
    • SLS

    Hi Oscar ,

    There seems to be some issue with the email headers. I created a mu-plugin on your site :


    which contains the following:

    add_filter( 'app_message_headers', function(){
    return '';
    }, 10 );

    which removes the headers that A+ is applying.

    Could you please do some tests and let us know if this resolves this issue?


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