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Plugin to split subscription emails


  • tananaev
    Participant

    @tananaev

    For my WordPress website I use third party SMTP server with a limit on number of recipients. Is there any plugin that I can use to split messages to limit maximum emails in BCC?

    For example, server limit is 50, so if I have 60 subscribers to a forum or topic, I want server to send two emails. One with 50 and the other one with 10 emails.

Viewing 4 replies - 1 through 4 (of 4 total)
  • Hi @tananaev ,

    It took me some time to look around, but maybe https://wordpress.org/plugins/asyncronous-bbpress-subscriptions/ can help you ?


    tananaev
    Participant

    @tananaev

    Thanks for suggestion, but I have actually already implemented it myself. Basically I took original bbpress methods and modified them slightly to split messages by 50 subscribers.

    @tananaev

    You created/used filters ? Or you just rewrote the functions ?
    If you want to share your work, please do.

    Pascal.


    tananaev
    Participant

    @tananaev

    I added functions to “functions.php” in my theme:

    I’m not a PHP developer and I’m not a WordPress expert, so I’m sure it’s far from perfect, but here is my code:

    function custom_bbp_notify_topic_subscribers( $reply_id = 0, $topic_id = 0, $forum_id = 0, $anonymous_data = false, $reply_author = 0 ) {
    
        // Bail if subscriptions are turned off
        if ( !bbp_is_subscriptions_active() ) {
            return false;
        }
    
        /** Validation ************************************************************/
    
        $reply_id = bbp_get_reply_id( $reply_id );
        $topic_id = bbp_get_topic_id( $topic_id );
        $forum_id = bbp_get_forum_id( $forum_id );
    
        /** Topic *****************************************************************/
    
        // Bail if topic is not published
        if ( !bbp_is_topic_published( $topic_id ) ) {
            return false;
        }
    
        /** Reply *****************************************************************/
    
        // Bail if reply is not published
        if ( !bbp_is_reply_published( $reply_id ) ) {
            return false;
        }
    
        // Poster name
        $reply_author_name = bbp_get_reply_author_display_name( $reply_id );
    
        /** Mail ******************************************************************/
    
        // Remove filters from reply content and topic title to prevent content
        // from being encoded with HTML entities, wrapped in paragraph tags, etc...
        remove_all_filters( 'bbp_get_reply_content' );
        remove_all_filters( 'bbp_get_topic_title'   );
    
        // Strip tags from text and setup mail data
        $topic_title   = strip_tags( bbp_get_topic_title( $topic_id ) );
        $reply_content = strip_tags( bbp_get_reply_content( $reply_id ) );
        $reply_url     = bbp_get_reply_url( $reply_id );
        $blog_name     = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
    
        // For plugins to filter messages per reply/topic/user
        $message = sprintf( __( '%1$s wrote:
    
    %2$s
    
    Post Link: %3$s
    
    -----------
    
    You are receiving this email because you subscribed to a forum topic.
    
    Login and visit the topic to unsubscribe from these emails.', 'bbpress' ),
    
            $reply_author_name,
            $reply_content,
            $reply_url
        );
    
        $message = apply_filters( 'bbp_subscription_mail_message', $message, $reply_id, $topic_id );
        if ( empty( $message ) ) {
            return;
        }
    
        // For plugins to filter titles per reply/topic/user
        $subject = apply_filters( 'bbp_subscription_mail_title', '[' . $blog_name . '] ' . $topic_title, $reply_id, $topic_id );
        if ( empty( $subject ) ) {
            return;
        }
    
        /** Users *****************************************************************/
    
        // Get the noreply@ address
        $no_reply   = bbp_get_do_not_reply_address();
    
        // Setup "From" email address
        $from_email = apply_filters( 'bbp_subscription_from_email', $no_reply );
    
        // Get topic subscribers and bail if empty
        $user_ids = bbp_get_topic_subscribers( $topic_id, true );
    
        // Dedicated filter to manipulate user ID's to send emails to
        $user_ids = apply_filters( 'bbp_topic_subscription_user_ids', $user_ids );
        if ( empty( $user_ids ) ) {
            return false;
        }
    
        $to_email = apply_filters( 'bbp_subscription_to_email', $no_reply );
    
        do_action( 'bbp_pre_notify_subscribers', $reply_id, $topic_id, $user_ids );
    
        for ( $i = 0; $i <= count($user_ids); $i++ ) {
            if ( $i % (50 - 1) === 0 || $i === count($user_ids) ) {
                if ( $i !== 0 ) {
                    $headers  = apply_filters( 'bbp_subscription_mail_headers', $headers );
                    wp_mail( $to_email, $subject, $message, $headers );
                }
    
                $headers = array( 'From: ' . get_bloginfo( 'name' ) . ' <' . $from_email . '>' );
            }
    
            if ( $i < count($user_ids) ) {
                // Don't send notifications to the person who made the post
                if ( !empty( $reply_author ) && (int) $user_ids[$i] === (int) $reply_author ) {
                    continue;
                }
    
                // Get email address of subscribed user
                $headers[] = 'Bcc: ' . get_userdata( $user_ids[$i] )->user_email;
            }
        }
    
        do_action( 'bbp_post_notify_subscribers', $reply_id, $topic_id, $user_ids );
    
        return true;
    }
    
    function custom_bbp_notify_forum_subscribers( $topic_id = 0, $forum_id = 0, $anonymous_data = false, $topic_author = 0 ) {
    
        // Bail if subscriptions are turned off
        if ( !bbp_is_subscriptions_active() ) {
            return false;
        }
    
        /** Validation ************************************************************/
    
        $topic_id = bbp_get_topic_id( $topic_id );
        $forum_id = bbp_get_forum_id( $forum_id );
    
        /**
         * Necessary for backwards compatibility
         *
         * @see https://bbpress.trac.wordpress.org/ticket/2620
         */
        $user_id  = 0;
    
        /** Topic *****************************************************************/
    
        // Bail if topic is not published
        if ( ! bbp_is_topic_published( $topic_id ) ) {
            return false;
        }
    
        // Poster name
        $topic_author_name = bbp_get_topic_author_display_name( $topic_id );
    
        /** Mail ******************************************************************/
    
        // Remove filters from reply content and topic title to prevent content
        // from being encoded with HTML entities, wrapped in paragraph tags, etc...
        remove_all_filters( 'bbp_get_topic_content' );
        remove_all_filters( 'bbp_get_topic_title'   );
    
        // Strip tags from text and setup mail data
        $topic_title   = strip_tags( bbp_get_topic_title( $topic_id ) );
        $topic_content = strip_tags( bbp_get_topic_content( $topic_id ) );
        $topic_url     = get_permalink( $topic_id );
        $blog_name     = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
    
        // For plugins to filter messages per reply/topic/user
        $message = sprintf( __( '%1$s wrote:
    
    %2$s
    
    Topic Link: %3$s
    
    -----------
    
    You are receiving this email because you subscribed to a forum.
    
    Login and visit the topic to unsubscribe from these emails.', 'bbpress' ),
    
            $topic_author_name,
            $topic_content,
            $topic_url
        );
    
        $message = apply_filters( 'bbp_forum_subscription_mail_message', $message, $topic_id, $forum_id, $user_id );
        if ( empty( $message ) ) {
            return;
        }
    
        // For plugins to filter titles per reply/topic/user
        $subject = apply_filters( 'bbp_forum_subscription_mail_title', '[' . $blog_name . '] ' . $topic_title, $topic_id, $forum_id, $user_id );
        if ( empty( $subject ) ) {
            return;
        }
    
        /** User ******************************************************************/
    
        // Get the noreply@ address
        $no_reply   = bbp_get_do_not_reply_address();
    
        // Setup "From" email address
        $from_email = apply_filters( 'bbp_subscription_from_email', $no_reply );
    
        // Get topic subscribers and bail if empty
        $user_ids = bbp_get_forum_subscribers( $forum_id, true );
    
        // Dedicated filter to manipulate user ID's to send emails to
        $user_ids = apply_filters( 'bbp_forum_subscription_user_ids', $user_ids );
        if ( empty( $user_ids ) ) {
            return false;
        }
    
        $to_email = apply_filters( 'bbp_subscription_to_email', $no_reply );
    
        do_action( 'bbp_pre_notify_forum_subscribers', $topic_id, $forum_id, $user_ids );
    
        for ( $i = 0; $i <= count($user_ids); $i++ ) {
            if ( $i % (50 - 1) === 0 || $i === count($user_ids) ) {
                if ( $i !== 0 ) {
                    $headers  = apply_filters( 'bbp_subscription_mail_headers', $headers );
                    wp_mail( $to_email, $subject, $message, $headers );
                }
    
                $headers = array( 'From: ' . get_bloginfo( 'name' ) . ' <' . $from_email . '>' );
            }
    
            if ( $i < count($user_ids) ) {
                // Don't send notifications to the person who made the post
                if ( !empty( $topic_author ) && (int) $user_ids[$i] === (int) $topic_author ) {
                    continue;
                }
    
                // Get email address of subscribed user
                $headers[] = 'Bcc: ' . get_userdata( $user_ids[$i] )->user_email;
            }
        }
    
        do_action( 'bbp_post_notify_forum_subscribers', $topic_id, $forum_id, $user_ids );
    
        return true;
    }
    
    function custom_bbp_init () {
    
        remove_action ('bbp_new_reply', 'bbp_notify_topic_subscribers', 11);
        add_action ('bbp_new_reply', 'custom_bbp_notify_topic_subscribers', 11, 5);
    
        remove_action ('bbp_new_topic', 'bbp_notify_forum_subscribers', 11);
        add_action ('bbp_new_topic', 'custom_bbp_notify_forum_subscribers', 11, 4);
    
    }
    
    add_action ('bbp_init', 'custom_bbp_init', 99);
    
Viewing 4 replies - 1 through 4 (of 4 total)
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