Shortwave

Shortwave is an AI-powered email client founded by former Google employees, designed to boost email productivity. It integrates advanced AI technology to automatically organize email, generate summaries, and help draft replies, and has been hailed as 'the spiritual successor to Gmail Inbox.'

• AI assistant: A built-in conversational AI assistant that answers questions about your email, generates summaries, and assists with writing
• Automatic email bundling: Intelligently groups related emails into Bundles for bulk processing and quick cleanup
• One-line summaries: Automatically generates key-point summaries for every email thread, with expandable detailed analysis
• Personalized writing: The Ghostwriter feature learns your writing style and generates email content that matches your personal tone
• Inbox splits: The Splits feature divides the inbox into labeled sections so you can focus on important email
• Team collaboration: Supports team features such as sharing email threads and collaborating on labels

Shortwave follows the 'Shortwave Method' philosophy, championing the 'only handle it once' (OHIO) principle to help users systematically reach inbox zero. The platform currently supports only Gmail and Google Workspace accounts, and offers iOS, Android, and web apps.

The product uses a freemium model: the free tier provides basic AI features and 90-day search history, while the paid plan costs $9 per month and unlocks full AI capabilities and unlimited search. User reviews are largely positive, with high mobile ratings of 4.8 stars (iOS) and 4.5 stars (Android).