Mailster is a versatile email newsletter plugin designed for WordPress. It simplifies the process of creating, sending, and tracking newsletter campaigns for your website. Here are some of its key features:

Key Features:

1. Comprehensive Tracking: Mailster allows you to track various metrics, including email opens, clicks, unsubscribes, bounces, and geographical data. This information helps you evaluate the performance of your email campaigns.
2. Campaign Scheduling: You can plan and schedule your email campaigns in advance, ensuring that they are delivered at the right time.
3. Autoresponders: Mailster offers six types of autoresponders, allowing you to set up automated email sequences based on user interactions or specific triggers.
4. Content Personalization: Personalize your emails using placeholders to make your content more relevant and engaging.
5. Web Versions: Each newsletter you create can have a web version, making it accessible online.
6. Social Media Sharing: Encourage your subscribers to share your emails on social media, extending your email reach.
7. Subscription Forms: Create unlimited subscription forms to capture leads and grow your email list. Widgets for sidebar placement are also available.
8. Opt-in Support: Mailster offers support for both single and double opt-in processes to ensure subscriber consent.
9. WYSIWYG Editor: You can use the "What You See Is What You Get" (WYSIWYG) editor for your email content, making it easy to design visually appealing newsletters.
10. Customization: Customize the appearance of your emails with infinite color variations, and utilize placeholders for personalized tags.
11. SMTP Support: You can use SMTP for email delivery, which is reliable and efficient.
12. DomainKeys Support: Ensure email delivery authenticity with support for DomainKeys Identified Mail (DKIM).
13. Import and Export: Easily import and export your subscriber lists as needed.
14. Retina Ready: Mailster is designed to look crisp and clear on high-resolution Retina displays.

System Requirements:

• WordPress 3.8+
• PHP 5.3+
• Fsockopen support for SMTP delivery
• DOMDocument extension
• PHP memory limit of 128MB or more

Mailster is a powerful plugin for WordPress that streamlines your email marketing efforts, allowing you to engage with your subscribers effectively and track campaign performance. It's a valuable tool for any website looking to manage and optimize its email newsletter campaigns.