Shamim's Plugins

When sending to multiple recipients we have 2 settings
settings 1 (default): Same message: All users will receive same message and replies will be visible to all users
Settings 2: separate message: All users will receive separate message and replies will not be visible to any other users but sender.

You can change this settings in Front End PM PRO > Settings > Recipients > Multiple Recipients

And For email, sender email is not visible to any users. Your email is sent from your systems email address. You can use any Email/SMTP plugin to change that.

You can use following code

add_filter("fep_get_user_option", function( $value, $option, $default, $userid, $is_default ){
    if( $option == "allow_emails" &&  $userid === 123){
        return false;
    }
    return $value;
}, 10, 5);

You can change user id value to chat you want.

You can add 2 approaches
Suppose current user id is 2 (you can get that using get_current_user_id()) and connected users of this user in 2,3 and 4 (get that from your member plugin or using query)

Approach 1. You show only connected users in auto suggestion and in directory.

add_filter( 'fep_filter_rest_users_args', function( $args, $for, $q, $x ) {
	$args['meta_query'] = [
            'include' => [2,3,4], //Get ids from member plugin
        ];
	return $args;
}, 10, 4 );

Approach 2. restrict user from sending message to only connected users

add_filter( 'fep_current_user_can', function( $can, $cap, $id ){
    if ( 'send_new_message_to' != $cap || ! $can ) {
	return $can;
    }
    //Get ids from member plugin
    if( in_array($id, [2,3,4] ) ){
        return true;
    }
    return false;
}, 10, 3);

I see somehow PREFIX_fep_messages table is missing. I need administrator access to your website. You can provide me in https://www.shamimsplugins.com/sensitive-information/ or join https://meet.google.com/vuv-bawq-sxj at 4:00 PM (UTC) time (20 minutes from now).

You were too much behind, recommended to update regularly.
Please let me know follwoing
1. Does your DB user have permission to ALTER the DB tables?
2. Can you check in DB if PREFIX_fep_messages, PREFIX_fep_messagemeta and PREFIX_fep_participants tables exists?

Can you check in https://www.shamimsplugins.com/account/ that your website is listed correctly under your license?
If not you can deactivate license and activate again.

Let me know

You can use following code

add_filter( 'fep_form_fields', function( $fields ) {
    $fields['message_content']['type'] = 'wp_editor';
    return $fields;
});