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Gemini API Configuration

Get your free API key from Google AI Studio

Using Gemini 2.5 Flash-Lite for optimal performance and cost efficiency

1.0
⚡ 0.0 - Precise 🎯 1.0 - Balanced 🎨 2.0 - Creative

Lower values (0.0-0.5) make output more focused and deterministic. Higher values (1.5-2.0) make it more creative and varied. Default: 1.0

Customize how the AI responds to your requests

Spam Words Management

AI Prompt Templates

Use placeholders like {systemPrompt}, {content}, {tone}, {terms}, {subjectLine}. These will be replaced before sending to AI.

Bulk Prompt Management

Supports both single text (applies to all) and structured format (individual prompts)

Export/Import all prompts as JSON for backup or sharing

More info about placeholders
{systemPrompt} – The global system instruction saved in AI Configuration. Sets the assistant's role and style.
{content} – The current email HTML from the left editor. Passed as-is, including tags.
{tone} – The tone you enter when using “Adjust Tone” (e.g., professional, friendly).
{terms} – For "Rewrite Spam Words", the comma-separated words/phrases you choose, provided to AI as JSON (e.g., ["free", "limited time"]).
{subjectLine} – The current subject line from the preview section.
Tips
  • You can reorder or wrap placeholders with additional instructions.
  • Keep structure and any required output format (e.g., JSON) in your template.
  • If a placeholder is missing at runtime, it will be replaced with an empty string.

Email Signature

Enter HTML for your email signature. This can be inserted into your emails.

No signature set

Reset Settings

Reset all settings to default values. This action cannot be undone.