Shortwave is a Gmail-based email client with AI search, thread analysis, personalized drafting, inbox organization, filters, web browsing, attachment analysis, and MCP-connected actions.
Direct verdict
Shortwave is worth testing when Gmail history has become an operational knowledge base and search, triage, or drafting consumes meaningful time. The premium tiers make sense only if better retrieval and approved replies offset the cost. Treat mailbox and MCP access as privileged: test source grounding, false actions, sensitive-thread boundaries, deletion, and account offboarding before rollout.
What to verify
Create a 30-day mailbox benchmark with 50 known-answer searches, 30 reply drafts, 20 long threads, attachments, calendar questions, ambiguous senders, restricted labels, and five reversible integration actions. Score retrieval precision, source support, draft acceptance, wrong-recipient risk, filter errors, latency, quota use, correction time, and cost per approved outcome.
Personal Recommendation
Shortwave is worth testing when Gmail history has become an operational knowledge base and search, triage, or drafting consumes meaningful time. The premium tiers make sense only if better retrieval and approved replies offset the cost. Treat mailbox and MCP access as privileged: test source grounding, false actions, sensitive-thread boundaries, deletion, and account offboarding before rollout.