The reading-pane toolbar exposes a Done button (Shift+E). Done emails leave the inbox view but stay accessible under the Done tab. The key difference from Archive: when a new inbound reply lands on the thread, Done auto-flips back to undone and the thread returns to the inbox.

There are two ways to set one.

• While composing a new message: tick Remind me if no reply before you send, and the reminder is attached to the message as it goes out. The tick box is there for a brand-new message only, and only on accounts where the sent copy can be identified at send time. If you do not see it, send the message and set the reminder on it from the Sent view instead.
• From the message itself: open any email in the reading pane and click Remind me if no reply. This works on a message you already sent, and on one you received.

Either way you pick an interval from a short row of options (1, 3, 5, 7 and 14, plus your own default if it is not already one of them). Each option states its unit, so it reads 3 business days rather than a bare number you have to interpret. Once set, the control shows the date it will fire, for example Reminder set for Thu, Mar 5 if no reply, with a Cancel link beside it.

A reminder you set last week is easy to lose track of, because until it fires it lives on a message you may not open again. Open the Scheduled view in the inbox sidebar: above the queued sends, a Waiting on reply section counts and lists every reminder that has not fired yet, each with its subject and the day it is due. Click a row to open that message, or Cancel to drop the reminder without leaving the list. Once a reminder fires it leaves this list, and the section is hidden entirely when nothing is waiting. The same reminders are also listed, under Reminders you set, at the top of Sent when its status filter is on Awaiting reply (below).

You do not have to set a reminder to see who has gone quiet. Open the Sent view, open the Status filter and pick Awaiting reply. The list shows the emails you sent from your own connected mailboxes that nobody has answered for longer than your Remind after interval: 3 business days unless you changed it in Email settings. It is the same setting the reminders use, so there is one number to tune, in business days or calendar days as you chose.

• Each row says how long it has waited, for example Sent 4 business days ago, counted in your interval's unit and your workspace timezone. Click Follow up beside it to open the message with the reply box ready, addressed to the people you wrote to rather than to yourself.
• A later reply from a person on the same conversation takes the message off the list, even if you have since deleted that reply. A later message of your own does too: the newer one is then the one waiting.
• An out-of-office, a bounce or an automated notice never counts as an answer, so the message stays on the list until a person replies.
• The list reads the mail dated in the 30 days before the cut-off, and the cut-off is now minus your interval. With the default of 3 business days, a message you sent three weeks ago with no answer is listed; one from two months ago is not.
• Reminders you set yourself are listed above the rows under Reminders you set. A message can appear in both places: the reminder is a date you chose, the row is how long the message has actually waited.
• Mail sent from a cold outreach mailbox is not included, because sequences already follow up when nobody replies, and neither is mail you sent only to your own addresses.

The mirror view lives in the Inbox: open the Status filter and pick Needs reply. It lists the emails a person sent you, in Primary or from one of your CRM contacts, that you have not answered for more than one business day. Marketing mail, automated notices and out-of-office replies are left out, and so is anything you archived, marked done or snoozed.

• Each row says how long it has waited, for example Received 2 business days ago, and Reply beside it opens the message with the reply box ready.
• Once you reply, the message leaves the list. If the same person writes again before you do, their newer message is the one listed.
• The wait is always one business day, whatever your reminder interval says, and the list reads the mail dated in the 30 days before that cut-off.
• New email from a person is checked once as it arrives, under Spot emails that need a reply, so most messages are already decided when you open the list.
• When you open Needs reply, the messages on screen get a quick check for whether they really ask you something. A message with a question in it stays; a short thank-you such as Thanks, got it and a calendar notice drop off the list on their own. The rest are read by AI, and a message it finds needs no answer drops off too. Anything the check cannot decide stays on the list, and once the check decides a message, the result is kept, so it is not checked again.
• The AI part follows your Suggested actions setting, under AI in your inbox in Email settings: Off keeps the check to the simple rules above, and Emails from your contacts sends only mail from your CRM contacts to AI. Spot emails that need a reply set to Rules only, in the same section, keeps it to the simple rules too. Collaborator seats get the simple rules only.

You do not have to tick a box on every email. Under AI in your inbox in Email settings, three rows add reminders and drafts for you. Each one is per user and follows you across devices.

• Remind me when people don't reply: when an email you sent asked for a reply and none came back within your Remind after wait, you get one Follow up: [subject] item in My Work. Choose Off, People in your CRM, or Everyone I email, the default.
• Also draft the follow-up: about an hour before that reminder, a follow-up draft to the person you wrote to waits in the conversation and in Drafted for you, for you to review and send. Nothing is sent for you. A reminder you set yourself gets one too, when the email asked for a reply.
• Remind me about emails I haven't answered: as soon as a new email from a person is found to need your reply, a Reply: [subject] item lands in My Work. Replying in that conversation clears it.

Laureo checks for these reminders every hour, in your workspace time zone. With business days, a wait ends at 7:00 in the morning there, so the reminder is waiting at the start of your day. Laureo knows that an email asked for a reply because it reads each email you send once, after it is sent, so mail you sent before that check existed is never reminded. Each email is reminded once. An email that already has a reminder you set yourself keeps that reminder and its date, and gets no second one.

Intervals are counted in business days unless you change it, so weekends are skipped rather than consumed: a 2-day reminder set on a Thursday lands on the following Monday, not on Saturday. The count runs in your workspace timezone, and the reminder is due at the start of the business day there.

To switch to plain calendar days, open Email settings (the gear in the inbox toolbar, or Settings > My preferences > Email inbox), and under AI in your inbox find Remind after. That one row holds both halves of the setting: the interval that is pre-selected for you, and the Business days or Calendar days switch beside it. The interval options name the unit you are on, so they read 3 business days or 3 days as you switch. Both are per user and follow you across devices.

Every hour a scheduled job checks the reminders you set that have come due and:

• If a reply has landed on the thread since you set the reminder, it is silently dismissed. You are not pinged about a conversation that already moved. An out-of-office, a bounce or an automated notice does not count as a reply, so it does not cancel the reminder, and the reminder still fires.
• Otherwise you get one in-app notification, titled Follow up: [subject], telling you the sender has not replied yet. Opening it takes you straight to the message.

The reminder is in-app only. It never sends you an email about an email. It fires once, and you can turn it off in Notification settings under Follow-up due.

To cancel a reminder before it fires, open the message and click Cancel next to the reminder line, or use the Cancel on its row under Waiting on reply. To push it out instead, cancel it and set a new one at a longer interval.

Once it has fired, the line on the message says so in the past tense, for example Reminder sent Thu, Mar 5, and the link beside it reads Dismiss rather than Cancel. Dismissing clears the line and frees the message to take a new reminder.