WordPress中的邮件营销插件有哪些？

1. MailPoet
2. Newsletter
3. OptinMonster
4. Bloom
5. Thrive Leads
6. WPForms
7. SumoMe
8. Leadpages

示例代码如下：

//MailPoet
if (class_exists('WYSIJA')) {
    // Create a new newsletter
    $newsletter_id = WYSIJA::createNewsletter($name, $sender_name, $sender_email, WYSIJA::getUserId());

    // Create a new list
    $list_id = WYSIJA::createList($name, $description, WYSIJA::getUserId());

    // Subscribe a user to a list
    WYSIJA::subscribe('name@example.com', $list_id, array('firstname' => 'John', 'lastname' => 'Doe'));
}

//Newsletter
if (class_exists('newsletter')) {
    // Create a new newsletter
    $newsletter_id = newsletter_create_new_newsletter($name, $subject, $preheader, $from_name, $from_email);

    // Create a new list
    $list_id = newsletter_create_new_list($name, $description);

    // Subscribe a user to a list
    newsletter_subscribe($list_id, array('email' => 'name@example.com', 'firstname' => 'John', 'lastname' => 'Doe'));
}

//OptinMonster
if (class_exists('OptinMonster')) {
    // Create a new campaign
    $campaign_id = OptinMonster_CreateCampaign($name);

    // Create a new opt-in form
    $form_id = OptinMonster_CreateOptinForm($name, $campaign_id, $template_id, $headline, $subheadline);

    // Display the opt-in form
    echo OptinMonster_DisplayOptinForm($form_id);
}

//Bloom
if (class_exists('Bloom')) {
    // Create a new email opt-in form
    $form_id = Bloom_CreateOptinForm($name, $template_id, $list_id, $activate_pop_up);

    // Display the email opt-in form
    echo Bloom_DisplayOptinForm($form_id);
}

//Thrive Leads
if (class_exists('ThriveLeads')) {
    // Create a new lead group
    $group_id = ThriveLeads_CreateLeadGroup($name);

    // Create a new opt-in form
    $form_id = ThriveLeads_CreateOptinForm($name, $group_id, $template_id, $headline, $subheadline);

    // Display the opt-in form
    echo ThriveLeads_DisplayOptinForm($form_id);
}

//WPForms
if (class_exists('WPForms')) {
    // Create a new email opt-in form
    $form_id = WPForms_CreateOptinForm($name, $template_id, $list_id);

    // Display the email opt-in form
    echo WPForms_DisplayOptinForm($form_id);
}

//SumoMe
if (class_exists('SumoMe')) {
    // Create a new email opt-in form
    $form_id = SumoMe_CreateOptinForm($name, $template_id, $list_id);

    // Display the email opt-in form
    echo SumoMe_DisplayOptinForm($form_id);
}

//Leadpages
if (class_exists('Leadpages')) {
    // Create a new opt-in page
    $page_id = Leadpages_CreateOptinPage($name, $template_id, $list_id);

    // Display the opt-in page
    echo Leadpages_DisplayOptinPage($page_id);
}