We are the only provider to offer you:
1. Preview Text Appearance: See how your preview text will appear in different email clients.
2. Access to Generated HTML from web client: Get access to the final HTML code generated by web clients.
3. Coverage of Chinese Service Providers: We include support for major Chinese email service providers.

Generated HTML from a web client is the final HTML generated by the web interface of an email service provider (ESP). Most ESPs will modify your email's HTML body to ensure better display on their platform. Knowing the details of the final generated HTML makes it easier for email editors to fix display errors.

Preview text, often called "preheader text," is a short description of the email content. It appears next to the subject line in the inbox list of most major email clients. This is achieved by adding an invisible HTML tag to your email's HTML body.

We register the relevant email addresses with the ESP and send real emails to these inboxes. We then use real devices to open the emails. Our software runs on each device and sends the test results back to our server.

Once we receive your task, we send out the email immediately. Typically, it takes 1-5 minutes to see the results. This duration depends on the time the ESP takes to receive the email into their inbox, the scheduled tasks running on our devices, and the time required to open, render the email, and send the results back to our server.

We currently have dozens of devices, covering iOS, Android, Windows Desktop, and Web Clients. We will continue to add more devices in the future as needed.

Yes, we accept customization requests. Since we have developed all the technology ourselves, we are able to customize the application to meet your specific requirements at a development cost.

To request customization, you must first become an enterprise member. Please send an email to service AT kooboo.com with your specific requirements, and our support team will get back to you shortly.

Yes, we have the most advanced email marketing software on the market. Our email inbox preview feature is part of this software, which we also offer as a standalone service. Our comprehensive email marketing service is branded as Mailifly.