The calendar integration is rolling out to Google Workspace users at the moment.

Google added a new Gemini side panel in Gmail for the web earlier this year, allowing users to utilize the chatbot to perform various tasks. In addition to offering summaries of an email thread, suggesting responses, preparing drafts, and answering questions about specific information in emails, the Gemini side panel also lets users perform tasks in other Workspace apps, like Docs, Sheets, Slides, and Drive without leaving Gmail. Google is now adding another integration to the mix to let users perform calendar-related actions within Gmail.