The extension's toolbar popup.

Click the MailViewed icon in Chrome's toolbar (pin it from the puzzle-piece menu if it's hidden) and a small panel opens. It's the extension's whole interface; everything else happens in Gmail itself or in your dashboard. Top to bottom, here's what's in it.

Connection status

In the header, a dot and a word. From extension 0.7.23: connected (green) when this browser is linked for your account and MailViewed's server accepted it, not signed in (amber) when it isn't linked or the server refused the link, this Gmail not linked (amber) when the extension is linked for a different Google account than the Gmail tab you last used, offline (amber) when it is linked but the server can't be reached, and checking… while it looks. When it says not signed in, Open dashboard takes you to the sign-in page that links it. When it says this Gmail not linked, the popup offers Switch account, and Open dashboard still opens the account that is linked. Earlier versions show connected whenever the server can be reached, linked or not. Offline usually means your internet connection; the extension checks again each time you open the popup.

Track new emails

The master switch, on by default. On, every new compose in Gmail starts with its pill on Tracking on, following your Track opens by default setting. Off, new composes start with tracking off; you can still click the pill in any compose to track that one email. It has no effect on emails you've already sent.

Activity

Your eight most recently active tracked emails, newest activity first. Each row shows the subject, who it went to, and where it stands: ✓ sent, ✓✓ N opens (plus clicks, if any), or ⚠ scanner only when the only loads so far came from a scanner. A 🔥 marks an email someone came back to. Click a row and that email's page opens in your dashboard.

If you haven't paired yet, this area says Sign in to MailViewed to activate tracking; use Open dashboard below it. If you're linked and nothing is tracked yet, it says so, and from extension 0.7.23 an Open Gmail button sits under it. From extension 0.7.24, if you're on the Free plan and your tracked emails are all older than 30 days, it says No tracked emails in the last 30 days and how many older ones are archived, not deleted, with the same button under it. If the server can't be reached, it says so and asks you to check your connection.

The number on the icon

About once a minute, for every paired account and even with Gmail closed, the extension checks for new activity and shows a desktop notification for new opens and clicks. The green number on the icon counts activity you haven't looked at yet; opening the popup clears it. Both follow your Real-time notifications setting: turn that off in Settings and there are no notifications and no count.

The rest

• Open dashboard → opens app.mailviewed.com in a new tab. Signing in there is also how you pair the extension.
• On the Free plan, a MailViewed Free · Upgrade → pill sits under it. From extension 0.7.21, Upgrade takes you straight to the yearly checkout (you sign in first if you aren't already). After your 25th, 50th, 100th, 250th and 500th tracked email a small card congratulates you, once each, and says what Pro adds. Pro accounts see neither; during a Pro trial, recent versions show when the trial ends there instead, with Keep Pro →.
• API endpoint (extension 0.7.22 and earlier) shows the server address the extension talks to. In the Chrome Web Store build it's fixed to MailViewed's server, so there was nothing to change there, and from 0.7.23 the field is no longer shown.
• The last line is the extension's version and build; include it when you write to support.