Side-by-side comparison · Updated April 2026
| Description | Antispace is an innovative AI-powered email service that prioritizes user data security and privacy. Leveraging advanced technology, Antispace ensures that only the minimum necessary information is accessed to provide its services, adhering strictly to privacy protocols. User data is never sold or shared with third parties, and is securely stored using industry-standard encryption measures. | Shortwave is a technology company utilizing AI to revolutionize email productivity. Their advanced email client is designed to help users get organized, make sense of their emails, and enhance decision-making. Backed by experienced professionals and top-tier investors, Shortwave's mission is to integrate cutting-edge AI technology and world-class design practices into email management, making it the most advanced email client available. |
| Category | Email Writing | Email Management |
| Rating | No reviews | 5.0 (1) |
| Pricing | N/A | Freemium |
| Starting Price | N/A | Free |
| Plans | — |
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| Tags | emaildata securityprivacyencryptionAI-powered | emailAIproductivityemail clientorganization |
| Features | ||
| AI-powered email service | ||
| Advanced data privacy | ||
| Gmail modify scope | ||
| No data selling or sharing | ||
| Industry-standard encryption | ||
| Enhanced email experience | ||
| Updated location at antispace.sh | ||
| Compliance with privacy regulations | ||
| Secure storage of user data | ||
| Minimal data access required | ||
| AI-powered email client | ||
| Predictive autocomplete | ||
| Instant summaries and replies | ||
| Advanced email bundling | ||
| Email open tracking | ||
| Shared email history and channels | ||
| Integrated scheduling and calendar invites | ||
| Custom AI writing prompts | ||
| Block and unsubscribe from spam | ||
| Do Not Disturb mode | ||
| View GhostAI | View Shortwave | |
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