When it comes to web design applications, there are several options available that can help you create visually appealing and functional websites. To ensure that your email doesn’t end up in spam when sending out bulk emails, make sure you follow best practices for email deliverability and avoid using spammy content or practices. Now, here are some popular web design apps you might find useful:

1. Adobe Dreamweaver: This is a comprehensive web design and development tool that offers both visual and code-based design capabilities.

2. Sketch: Sketch is a vector graphics editor for macOS that’s popular among designers for its user interface design capabilities.

3. Figma: Figma is a cloud-based design tool that allows real-time collaboration on designs. It’s great for teams working on web design projects.

4. Webflow: Webflow is a visual web design and development platform that lets you design, build, and launch responsive websites visually.

5. WordPress: While it’s primarily known as a content management system (CMS), WordPress also offers a range of design tools and themes for creating websites.

6. Wix: Wix is a user-friendly website builder that offers drag-and-drop design features and a wide range of templates.

7. Squarespace: Similar to Wix, Squarespace is a popular platform for building websites with pre-designed templates and a simple interface.

8. Bootstrap: If you’re comfortable with coding, Bootstrap is a powerful front-end framework that provides a responsive grid system and a variety of UI components.

9. Elementor: This is a popular WordPress plugin that adds a drag-and-drop page builder to the platform, allowing you to create custom layouts easily.

10. Adobe XD: While initially designed for user experience (UX) and user interface (UI) design, Adobe XD can also be used for creating website prototypes.

Remember, the design and content of your emails also play a role in whether they end up in spam folders. Avoid using excessive images, large attachments, and suspicious-looking links. Make sure your emails have relevant and engaging content that your recipients actually want to receive. Additionally, consider using an email marketing service that specializes in delivering bulk emails while adhering to spam guidelines.