Users appreciate the plugin for its seamless integration with Contact Form 7 and services like MailerLite and Mailchimp. They highlight its simplicity, ease of setup, and the fact that it performs its intended functions effectively. Users also praise the responsive and helpful customer support, with instances of prompt issue resolution and accommodations for feature requests. However, some drawbacks include issues with API connectivity on multiple sites, slow data submission to Google Sheets, and functionality limitations in the free version. Some users also experienced inconsistent performance, with sporadic delivery of signups, leading to concerns about reliability.