OpenedOrNot by 500apps is an email tracking extension for Gmail which lets you track emails that you sent to users. Check the status of every email you send, check for delivery, and keep track of when emails are opened. Features Email Tracking- When your email is seen by the receiver, you'll get a notification right away. Your notification includes the subject of the email, the recipient's details, and the time. Read Receipts- Two green ticks indicate whether or not a message has been read. With OpenedorNot Read Recipients, you can get grey ticks for delivery confirmation. Link-Click Tracking- Receive daily statistics that look at several factors such as emails tracked, read, and unread emails count to examine the open rate of link-click tracking of each email sent. Daily Reports- Analyze detailed daily reports on emails that have been delivered, opened, and clicked. Daily Reports is a versatile, user-friendly, and cost-effective tool.