What the Yellow Importance Marker Means in Gmail

If you've noticed a small yellow arrow sitting to the left of some messages in your Gmail inbox and wondered what does the important marker mean in Gmail, the short version is: Gmail's importance-prediction system flagged that message as one it thinks you're likely to care about. A solid yellow marker means the message cleared that bar. An empty, outlined marker means it didn't.

The marker isn't the same thing as a star, and it isn't random. A star is something you set by hand for anything you want to keep visible. An importance marker is Gmail's own guess, built from a model of your habits — who you reply to, what you open fast, what you ignore without reading. That guess gets things wrong often enough that Google built a one-click way to correct it, plus a setting to turn the whole display off.

This post covers exactly what feeds the prediction, how to correct a wrong call, where the setting lives on each platform, what to do when markers keep landing on the wrong messages, and how it's different from Priority Inbox — a related but separate feature that trips people up constantly.

Before you start#

A few things are worth knowing before you go changing settings, because the importance marker gets confused with two other Gmail features constantly.

• Know which feature you're looking at. Importance markers are separate from Priority Inbox (the sectioned inbox layout) and from category tabs like Primary and Promotions. You can have markers turned on with any inbox layout, including the plain default inbox.
• The display and the prediction are two different things. Gmail can keep scoring messages for importance in the background even when you've told it not to show the arrow — turning off the marker's visibility doesn't necessarily mean Gmail stops classifying.
• The on/off setting is desktop-only. You change it from a browser at Settings > See all settings > Inbox tab. Gmail's Android and iOS apps don't carry their own copy of this setting — whatever you choose on the web applies back to the app.
• A message can be starred and marked important at the same time, and they mean different things. If you're troubleshooting a specific email, check both indicators separately rather than assuming one implies the other.

How Gmail decides what's important#

Gmail's own documentation lists a specific set of signals that feed the prediction. It's a per-account model — the weights are trained on your history, not a shared formula — so two people's inboxes will rarely score the same message the same way.

• Whom you email, and how often you email them
• Which messages you open
• Which messages you reply to
• Keywords that show up in emails you usually read
• Which messages you star, archive, or delete

Google doesn't publish the exact weighting behind these signals, and the model updates continuously as your behavior changes — there's no fixed formula to reverse-engineer. That's also why a brand-new sender or a recent shift in your own habits can throw the prediction off, which the troubleshooting section below covers.

It's also worth being clear about what the marker doesn't do. Importance prediction has no effect on spam filtering and no effect on which category tab a message lands in. Those are separate systems that run before Gmail ever scores a message for importance, so a marker being wrong never means a delivery problem — the message still arrived exactly where it would have anyway.

How to see it, correct it, and turn it off#

1. 1

   Check whether markers are turned on

   Go to Settings (the gear icon, top right) > See all settings > Inbox tab. Find the Importance markers section. If it's set to Show markers, arrows are already appearing next to messages Gmail scores as important.

2. 2

   Learn to read the arrow

   A solid yellow arrow means Gmail scored that message as important. An empty, outlined arrow means it didn't clear the bar. Hovering over either one shows a short label confirming the current status.

3. 3

   Correct a wrong call directly in your inbox

   Click the arrow once to flip it — important becomes not important, or the reverse. Gmail treats every manual correction as feedback for your account's model, so it's the strongest input you can give it, stronger than simply opening or archiving a message without reacting to the marker.

4. 4

   Pull up everything Gmail marked important

   Type is:important into the Gmail search bar to list every message currently carrying the marker, across whatever inbox layout you're using. Combine it with other operators — is:important is:unread, or is:important from:someone — to narrow the list before correcting anything in bulk.

5. 5

   Turn markers off, or just stop the personalization

   Back in Settings > Inbox tab > Importance markers, there are two different levers, not one. Choose No markers to stop the arrows from displaying at all. Choose Don't use my past actions to predict which messages are important instead if you want the feature to stay visible but stop personalizing based on your open, reply, and star history. Click Save Changes at the bottom either way.

Where this works differently by platform#

The setting itself lives in exactly one place, but what you can actually do with importance markers changes depending on where you're reading mail.

When markers keep getting it wrong#

Importance markers are trained on your account's history, so a wrong call is usually explainable rather than random. Three patterns account for most of the complaints in Gmail's own community forums.

• A new sender with no history. Gmail has nothing to weigh yet, so it often guesses wrong on the first few messages from someone you just started emailing. It tends to correct itself once you've opened or replied to a couple of their messages.
• Bulk mail written to look personal. Cold outreach and some newsletters are formatted like a one-to-one email, and Gmail sometimes scores them as important because the surface signals look personal even though the content isn't.
• A recent shift in your own habits. If you start replying quickly to a category of mail you used to ignore — or the reverse, after a role change — the model needs time to catch up. Corrections apply to future mail, not retroactively.

A faster way to stop correcting the marker#

Correcting a wrong marker works, but it's still you doing the triage — just with slightly better information about what to fix. Importance prediction only tells you what Gmail thinks deserves attention after the message has already landed in your inbox, looking the same as everything else until you notice the arrow.

AI Emaily's agent reads each message as it arrives and acts on it directly — drafting a reply, filing it, or flagging it for you — instead of leaving a small arrow for you to interpret by hand. Nothing sends without your approval, every action is logged and reversible, and it connects to the Gmail account you already have. We build AI Emaily.