When you create your estimate, you'll set an expiration date in the 'Estimate Link Expiration' field. If you try to send the estimate after this date or if the customer attempts to open it, the link won’t work. Don't worry! You can easily update the expiration date by following these steps
Log into your account
From the menu, choose Estimates
Locate and open the Estimate you want to update
The estimate will open in the estimate builder in a new tab
From that tab, at the top, click the Number 1 Settings to open the estimates settings
Locate the Estimate Link Expiry section
Enter in new number of days
Click Continue and Build Estimate button
Confirm all details are correct in your Estimate
At the top right, click Send Estimate
The Send Estimate pop up will appear
Select how you want to send the Estimate Link
Click Confirm & Send to Contact