When to use email summaries

Priya is a product manager who just returned from a two-week vacation. She opens Gmail to find 847 unread emails. One thread immediately catches her eye—it has 43 replies debating a product launch decision that happened while she was away.

At the top of the thread, she notices the "Summarize this email" button. She's tempted to click it, but wonders: Is this the right situation for a summary?

When is Gemini's "Summarize this email" feature most useful?