Shamim's Plugins

That will not be practical because every field require individual type of validation and sanitize.

You can easily capture id from url and add that in post meta. Use code like

add_action( 'fep_action_message_after_send', function( $message_id, $message, $inserted_message ){
    wp_parse_str( $_SERVER['HTTP_REFERER'], $referrer );
    $id = !empty( $referrer['id'] ) ? absint($referrer['id']) : 0; //Change id with your parameter
    //here if require check some validation
    add_post_meta( $message_id, '_your_custom_meta_key', $id );
}, 10, 3 );

In PRO version Multiple recipient, email beautify etc feature included. But in extensions page those will not show as installed. Those are separate extensions.

Can you please check that your role is not blocked? Please go to Dashboard > Front End PM PRO > Settings > Security > Role to Role Block

Also can you send me your Front End PM PRO > Settings > Emails tab screenshot?

Please add following code in your theme’s (child theme’s if any) functions.php

add_action( 'fep_display_after_message', function(){
	$authordata = get_userdata( get_the_author_meta('ID') );
	
	if( in_array( 'administrator', $authordata->roles ) ){
		echo '<a href="' . esc_url( home_url( 'business-directory/' ) ). get_the_author_meta('user_nicename') . '">' . get_the_author_meta('display_name') . '</a>';
	}
});

Change ‘administrator’ to whatever your user role is. For testing purpose i have used ‘administrator’ so that you can check that only ‘administrator’ role users link will show.

You want to display only if message user is given user role or who is seeing that user is given user role?
Which role you want to display?

three arguments are sent from fep_action_message_after_send action.
You can use fep_get_message_with_replies( $id ) to get message with replies of given id.
Please see functions.php of this plugin to see code.

Please add following code in your theme’s (child theme’s if any) functions.php

add_filter( 'fep_filter_message_before_send', 'fep_cus_send_url', 999 );

function fep_cus_send_url( $message ) {
    if( empty( $message['message_content'] ) || $message['post_parent'] )
    return $message;

    $message['message_content'] .= '<div>';
    $message['message_content'] .= esc_url( $_SERVER['HTTP_REFERER'] );
    $message['message_content'] .= '</div>';
    
    return $message;
}

Let me know.

No. May be you had removed from wrong place.
I also changed some code which is not related to this. In your code you are showing only your vendors in directory, but your code was wrong, i just corrected that.

Then your first code should should work. Please change your code to what you used before ( with to=”{current-author}” )
Can you please create an account for me so that i can see?