Gmail's AI Smart Compose 2.0: Contextual Drafting Teardown

AI · 5 min read

Smart Compose 2.0 moves beyond sentence completions to propose draft outlines, subject lines, and follow-up reminders based on calendar events and conversation history. The UI surfaces suggestions inline but also offers a 'Draft Assist' pane for multi-sentence generation and canned response variations. Designers built a lightweight preview affordance to inspect and accept generated segments selectively.

The product team focused on transparency: suggestion provenance is shown as a subtle badge indicating "Suggested by AI" and a hover card explains which signals were used. Prompt design is handled server-side with controllable templates, while local heuristics filter sensitive content. The flow carefully places the acceptance controls to avoid accidental sends, introducing a non-modal review step for generated subject lines.

From a privacy and trust standpoint, opt-in granular controls were essential. Users can disable calendar access or set generation to on-device only for drafts. The teardown highlights lessons for designers integrating assistive AI: make provenance visible, keep controls discoverable but unobtrusive, and prioritize safeguards against implicit automation of sending actions.