I’m on record with not loving Personal Intelligence, the Google tool that allows Gemini to reference your Google searches, past Gemini chats, your Gmail inbox, and other Google data when responding to your queries.
Now available for all U.S. Google users and no longer stuck behind a paywall, Personal Intelligence can be pushy and annoying, with Gemini too often butting in with random asides about my life and background (“As a PCWorld writer…”) when I just want a simple question answered.
That said, Personal Intelligence does have some nifty tricks up its sleeves, and this Gmail hack is among its most powerful.
With a simple prompt and Personal Intelligence enabled, you can get Gemini to quickly comb through and triage your Gmail inbox, perfect for pulling out your most important messages and serving up summaries of the rest in order of priority.
Just to be clear, this Personal Intelligence functionality doesn’t actually sort or delete your actual Gmail messages, meaning there’s no danger of Gemini accidentally nuking your inbox. Instead, think of it more as an executive summary of your most important daily messages, ideal for getting a quick peek at your inbox before actually diving in.
In terms of privacy, it’s a mixed bag. While Google says it won’t train Gemini directly on your messages, it reserves the right to train Gemini on “limited” info, such as chats with Gemini about your email or the model’s responses to your queries.
If you’re fine with that caveat and you’re ready to move forward, the first step is to enable Gemini Personal Intelligence on your Google account (the feature is opt-in, meaning you must proactively switch it on). Go to the Gemini app (iOS, Android, or on the web), select Settings > Personal Intelligence > Connected Apps, then toggle on the Google Workspace option.
Next, go to the left column, launch a new Gemini chat, and ask Gemini to give you a summary of your Gmail inbox. Exactly how you craft this prompt is up to you. Just know that your final prompt will have a big impact on Gemini’s reply.
I took a two-stage approach here, first asking Gemini (using the step-up “Thinking” model”) to write its own prompt: “I’d like to use Gemini Personal Intelligence to help triage my Gmail messages in the morning. Can you help me come up with a good prompt for that?”
Gemini thought for a few moments and then came up with this:
Prompt: Using @Gmail, look at my unread emails from the last 24 hours. Provide a concise morning briefing organized into the following categories:
Immediate Action: Emails from my core team, bosses, or family that require a response today. Briefly summarize the request and note any deadlines.
Project Updates: Threads related to [Insert Active Project Name] or [Insert Active Project Name]. Just give me the ‘latest status’ in one sentence.
News & Reading: A bulleted list of newsletters or industry updates I should look at when I have a break.
Low Priority/FYI: Calendar invites, automated notifications, or receipts that don’t need a reply.
For each ‘Immediate Action’ item, suggest a one sentence draft reply I could use.
Gemini also suggested some customizations for this prompt. For example, you could specifically define the important people in the “Immediate Action” section to ensure their messages are prioritized, or you could ask it to group frequent emails you receive from, say, Expedia, GitHub, or Jupiter.
(You may also note the “@Gmail” tag that explicitly tells Gemini to call its Gmail tool; it’s a good way to ensure Gemini knows to ping your Personal Intelligence info, but in most cases it’s not strictly necessary.)
I went ahead and ran the prompt for my morning Gmail, and I got a nicely organized one-sheet with a couple key emails up top, including suggested replies, summaries of a few newsletters I subscribe to, and a few low-priority updates at the bottom. I checked my actual inbox shortly after, and yes, the Gemini summary was accurate.
While Gemini didn’t actually take action on the messages in its rundown, it did embed links for each message; tapping a link jumped me directly to the missive in question.
So, yes, this Gmail trick for Personal Intelligence is a handy one, and it’s relatively safe, but it only offers a taste of what a true personal AI assistant could do. For starters, there’s no way to automate this prompt, you’d have to run it manually each morning.
Also, while we’ve seen horror stories of agentic AI tools like OpenClaw accidentally laying waste to email inboxes, an ideal AI agent would be able to (safely) sort your messages, nix the spam, and even auto-reply to low-priority senders.
That said, this Personal Intelligence trick for Gmail is a great place to start.
Note: Both Claude and ChatGPT have their own Google integrations, allowing for similar Gmail inbox summarization tricks. Even better, Claude Cowork in the Claude Desktop app could be configured to trigger more complex and automated tasks. I’ll be covering those details soon, so stay tuned.
