Gemini for Gmail: Draft, Summarize, and Review Email

Gemini is Google's AI assistant, and it is built directly into Gmail. In Gmail it can draft a reply from a short prompt, summarize a long thread you have not read yet, generate a new email from scratch, and suggest what to do next after an email exchange. The feature appears as a small star icon inside the compose window and in the right panel of your inbox.

What Gemini in Gmail does not keep is the broader communication context: your tone rules, your approved phrases and the decisions that govern how your team communicates with clients. fenbs stores those communication rules and project decisions so connected AI apps can apply them consistently, not just in a single email session.

What Gemini does inside Gmail

"Help me write" opens a prompt field in the compose window. Describe what you need — "Decline this meeting request politely, suggest next week instead" — and Gemini drafts the email. You can refine it with follow-up instructions: "Make it shorter" or "Use a more formal tone."

"Summarize this email" appears at the top of a long thread. Gemini reads the thread and gives you a paragraph summary with the key decisions and open items. For threads with many replies over days or weeks, this saves a significant amount of re-reading.

In Google Workspace accounts, Gemini also appears as a side panel across Gmail, Google Docs and Google Drive. From the panel you can ask questions about your emails: "What did the client say about the delivery date?" It searches across your Gmail to find the answer.

Which plans include Gemini in Gmail

Availability depends on your Google account type. Check Google's Gemini for Google Workspace page↗ (opens in a new tab) for the current list of plans that include Gemini in Gmail. Personal Google accounts have had access to some Gemini features in Gmail, but the depth of functionality varies by plan.

Google updates which features are included in which plans regularly. The help center entry for Gemini in Gmail is the reliable source for current availability rather than third-party summaries, which may be out of date.

Drafting emails with a prompt

The "Help me write" prompt works best when you are specific about the email's goal and constraints. "Write a follow-up to a client who has not responded in two weeks, friendly tone, do not apologize or sound urgent" produces a more useful draft than "write a follow-up email."

Useful details to include in a prompt: the relationship (new client, existing supplier, internal team), the tone (formal, casual, direct), the goal (get a response, share information, request a decision) and any constraints (keep it under three sentences, do not mention price). The more specific the prompt, the less you have to edit.

• Name the relationship: "A client we have worked with for two years."
• State the tone: "Professional but not stiff."
• Give the goal: "Get them to confirm the meeting date."
• Add constraints: "Do not mention the invoice — that is a separate conversation."

Using Gemini to summarize long threads

Long email threads are one of the better use cases for Gemini in Gmail. A thread that runs to forty replies over two weeks can be summarized in a few seconds to show the key decisions, the outstanding questions and who is waiting on whom.

Treat the summary as a starting point, not a final answer. Check the thread for anything that needs context beyond what the summary shows — a tone shift, an attachment or a nuance in wording that a summary might flatten. Then proceed from the summary if it looks right.

Setting up reusable communication rules

Gemini in Gmail does not remember instructions from one email to the next. If you always want a specific tone, a particular phrase or a standing rule — "never commit to a delivery date in writing without checking with the operations team first" — you have to include that in every prompt.

Saving those rules once and having them available to any AI session is more reliable. fenbs keeps communication rules and project decisions as Decisions and rules entries. A connected assistant reads them at the start of a session, so the rules apply without having to be repeated.

What Gemini in Gmail does not do

Gemini in Gmail does not connect to other project management tools. If a client's email triggers a task that needs to be tracked alongside related work, that tracking happens outside Gmail. Gemini can help you draft the response; it does not create a task in fenbs or another project tool automatically.

It also does not make decisions on your behalf. A decision to accept a contract term, agree to a change in scope or approve a delivery still needs a person. Gemini can draft the email that communicates the decision; you make the decision.

How to do this with fenbs

1. Create a free account and add a project for the work that generates recurring email communication.
2. Add communication rules as Decisions and rules: tone guidelines, phrases to use or avoid, and any standing rules about what requires approval before being committed in writing.
3. Add approved phrases or email templates as context notes or Skills.
4. Connect your preferred AI app over MCP from /integrations. Use it to draft emails based on the stored rules when Gemini in Gmail does not have the project context it needs.
5. When an email produces a decision — a scope change, an agreed date — record that decision in fenbs so it is part of the project record, not just buried in a thread.

fenbs does not connect directly to Gmail or read your inbox. It stores the context and rules that inform communication, not the emails themselves. For related Gemini features, see gemini notebook and gemini for project management.