# Auto close stale tickets

#### What is Auto Close?

Auto Close automatically closes tickets that have had no activity for a set period of time. This helps keep your inbox clean by resolving stale conversations that no longer need attention.

#### Setting Up Auto Close

1. Go to **Mailbox Settings** and select a mailbox
2. Find the **Auto Close** setting
3. Choose a time period: **5, 10, 15, 30, or 90 days** of inactivity
4. Click **Save**

Any ticket in that mailbox with no new messages for the chosen period will automatically be set to Closed.

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Auto Close is configured per-mailbox, so you can set different thresholds for different shared inboxes. For example, you might auto-close after 5 days for a sales mailbox but 30 days for a support mailbox.
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#### What Happens When a Customer Replies?

If a customer replies to a ticket that was auto-closed, the ticket will automatically reopen. Your team will see it back in the inbox as an open ticket, and any SLA rules will apply as normal.