BlueTicks for Gmail

BlueTicks adds WhatsApp-style read receipts to Gmail. One tick means your email was sent, two blue ticks mean it has been opened. Receipts arrive in real time, right inside the Gmail interface, so a glance at your Sent list tells you where things stand. Hover a tick to see when, and how many times, an email was opened. A companion side panel lists every conversation with its open status and surfaces the messages still waiting on a read. Multi-account support keeps ticks in sync across all your Gmail accounts, and your own opens never count as reads. Setup is one click: no new inbox, no OAuth, no access to your Google account. Recipients see nothing: no banner, no notification, no tracking signature added to your messages. Email content is never stored on the servers, subject lines and recipients stay in the browser, and no IP addresses are kept. Built on the GDPR principle of data minimisation. There is a free plan, and the paid plan is 4 dollars a year for gmail accounts. Available for Chrome and Firefox.