Shortwave vs Spark Mail

Shortwave is an AI-powered email client built by former Google engineers that layers natural-language automation on top of email. Users can ask it to organize their inbox, draft messages in their own voice, search across past mail, and schedule meetings, all through plain-language prompts rather than manual filters. Beyond individual productivity, Shortwave includes team features such as shared threads, comments and assignments, plus integrations with Slack, Notion, Asana and HubSpot. It is used by teams at companies including Twilio, Spotify and GitHub, and runs on Mac, Windows, iOS and Android in addition to the web.

Spark Mail is an email client designed to simplify email management with AI-assisted email writing and smart inbox prioritization. It offers shared team inboxes for collaborative email management, making it an ideal solution for teams and individuals looking to streamline their email workflow.

• Full native apps across Mac, Windows, iOS and Android, not just a browser extension
• Team features like shared threads and assignments make it usable for shared inboxes
• AI search can answer questions across mail history rather than only keyword matching
• Built by an experienced team with backing evident from its enterprise customer list

• AI-assisted email writing saves time and increases productivity
• Smart inbox prioritization helps users focus on important emails
• Shared team inboxes enable seamless collaboration
• Cross-platform compatibility makes it accessible to users across different devices

• No published free tier, only a 14-day trial before paid billing
• Per-seat pricing rises quickly at the Premier and Max tiers for AI-heavy usage
• Migrating a team's whole workflow to a new email client is a bigger switch than adding a plugin

• Limited customization options for the interface
• No built-in calendar integration
• Limited integration with other productivity apps