The Rundown: In this guide you'll learn how to build a complete email campaign generator using Google AI Studio's Build Mode, where you can turn a simple idea into a working web app with AI copywriting and image generation.

Who is this useful for:

• Marketing managers who want to build and use their own campaign tools
• Small businesses that can't afford expensive email marketing platforms
• Content creators who need to generate multiple email variants quickly
• Agencies pitching campaigns to clients who need working prototypes fast

STEP 1: Plan your email tool with AI assistance

Head to the Google AI studio and open the chat mode. Select Gemini 2.5 Pro for better quality outputs.

Prompt AI Studio to help you plan:

"Create a product requirements doc for an email campaign generator tool. It should take a single campaign idea as input (like “summer product launch”) and generate: email subject lines, body copy, and campaign images. List key features, user flow. Keep it under 100 words with bullet points."

With this the Gemini model generates a structured PRD outlining features like prompt-based generation, A/B subject variants, and image generation. Copy the generated PRD to use it in the Build mode.

STEP 2: Build your tool using Build Mode

Click the "Build" tab and you’ll get to see a prompt bar to describe your app idea. But, before getting started with the prompt, select the relevant AI capabilities needed for the app, in this case move forward by selecting:

• AI Powered Chatbot (which will be used for dynamic copy generation)
• Generate Images with a Prompt (this will be used for campaign visuals)

Select Gemini 2.5 Pro as your model and in case you’re a developer who wants to select the your desired framework, you can select React/Angular as the framework.

Paste your PRD into the main prompt box using the below prompt template:

"Build an email campaign generator based on this PRD: [paste your PRD]. Include a chatbot for copy refinements and image generation for 3 campaign visuals."

Hit "Build" and AI Studio scaffolds the entire app in 1-2 minutes.

STEP 3: Brainstorm ideas and test your email campaign generator

While the app is being built, you can check for various ideas that are relevant for this app on the right panel, and hit the “Add to chat” button, which enables Gemini to start building the selected feature.

Once built, click "Preview" to test the app. You can try a sample campaign:

Input: "Holiday gadget sale"

Check that it generates:

• 3 email subject line variants
• Complete HTML email body with your campaign copy
• 3 banner images for the campaign

Test edge cases like vague prompts to ensure it handles them gracefully. Refine by prompting: "Make the subject lines more urgent" or "Regenerate images with warmer colors."

STEP 4: Publish and share the app with your team

Click the “Share” icon in the top right to of the screen. You’ll get a pop up, where you need to:

• Toggle the “Publish your App” button

And you’ll the link to share the AI studio app that you can share across your team. Simply copy the link and share it across, anyone with the link can use it to generate email campaigns with assets.

Pro tip: Repurpose this workflow for other marketing tools by swapping the PRD for a social media caption generator, blog post outliner, or ad copy brainstormer. The same process works for any content creation tool you need.