Gemini in Gmail: Auto-Summarize Long Emails in Japanese | Google Workspace

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Key Points of This Article

• Between October and November 2025, the summary card feature for long emails in “Gemini in Gmail” began to support Japanese emails.
• The summary card feature in “Gemini in Gmail” is an automatic AI summarization tool that displays a card with a summary at the top of long email threads, emails with multiple replies, and lengthy messages.
• Initially introduced to the Android/iOS “Gmail” app in May 2025, it was then rolled out to the desktop version of “Gmail” in July 2025 (initially for English emails only).

Google appears to have expanded the long email summary card feature in “Gemini in Gmail” between October and November 2025. This Google AI “Gemini” integration was initially introduced to the desktop, Android, and iOS “Gmail” apps from May to July 2025.

The summary card feature in “Gemini in Gmail” is an automatic AI summarization tool that displays a card with a summary at the top of long email threads, emails with multiple replies, and lengthy messages. It was initially introduced to the Android and iOS “Gmail” apps in May 2025, and later to the desktop version of “Gmail” in July 2025, but at first, it only supported English emails.

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However, between October and November 2025, the summary card began to appear for Japanese emails as well. It is expected that Google will officially announce the expansion of language support for the long email summary card in “Gemini in Gmail” in the near future.

However, “Gemini in Gmail” is a premium feature available for “Google Workspace” accounts, as well as for members of the Google AI plans “Google AI Pro” and “Google AI Ultra” on “Google One.” It is not available to general Google users.

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Source: Google