BuilderJS is a versatile HTML Email & Page Builder designed to simplify the process of creating stunning and responsive email templates and web pages. With a range of features, BuilderJS empowers users to design visually appealing emails and web content with ease. Below is a comprehensive list of its key features:

1. Drag-and-Drop Interface
2. WYSIWYG Editor
3. Responsive Design Tools
4. Pre-designed Templates
5. Customizable Components
6. Image and Text Editing
7. Color Palette Selection
8. Font Styling Options
9. Background Image Support
10. Integration with Email Service Providers
11. HTML Code Editing
12. Preview Mode
13. Undo and Redo Functionality
14. Export Options (HTML, PDF)
15. Code Validation
16. Mobile Preview
17. Social Media Integration
18. Analytics Integration
19. Multi-language Support
20. Collaboration Tools
21. Version Control
22. Template Library
23. Asset Management
24. Dynamic Content Insertion
25. Conditional Content Display
26. Personalization Features
27. Inbox Preview
28. Spam Testing
29. A/B Testing
30. Email Automation Integration

With BuilderJS, users can create visually stunning and engaging email campaigns and web pages, enhancing their marketing efforts and driving better results.