## Zoho Billing - Product, solutions, integrations, support, and resources Index Access the complete documentation index at: https://www.zoho.com/au/billing/llms.txt Use this file to discover all available documentation pages before proceeding. [Back](./) # How do I check if my customer has viewed the quote/invoice that I’ve sent them? To check if your customer has viewed the quote/invoice you sent, you need to have customer portal enabled for your customer. Once your client views the quote/invoice, an ’eye’ icon will be shown next to the invoice/quote denoting that the customer has viewed the quote/invoice and will also be seen in the quote/invoice window. A history notification ‘Quote viewed in portal’ or ‘Invoice Viewed in portal’ will also be available in the quote/invoice window notifying you. You will also receive a notification when your customers view the quotes that you’ve sent them. To view the notification, click on the bell-shaped icon present on the top right corner of the page. * * *