Gmail FollowUp Radar

About

Gmail FollowUp Radar keeps your inbox honest. It watches every thread you're involved in and makes sure nothing slips through the cracks — whether that's an email you sent and never heard back on, or a message someone sent you that's still sitting unanswered.
How it works
Once installed, FollowUp Radar quietly monitors your Gmail conversations in the background. When you send an email, you can mark the thread for follow-up tracking with a single click. The extension then watches for a reply. If none arrives within your chosen window, it alerts you with a browser notification and highlights the thread in the extension popup so you know exactly what needs attention.
The reverse works too — if someone is waiting on you to reply, the extension surfaces a "Reply Later" button right inside the Gmail thread view, letting you log it for later without losing track.
Key features

Automatic detection of sent emails that haven't received a reply
"Reply Later" reminders for threads where you owe a response
Browser notifications when a follow-up becomes overdue
A live popup dashboard listing all tracked threads and their status
Smart in-thread UI — context-aware buttons appear directly inside Gmail
Lightweight and private — everything is stored locally on your device, nothing is sent to external servers

Why install it
If you rely on email for work, important conversations get buried. You follow up when you remember, which isn't always. FollowUp Radar turns your inbox into an active task list, so the ball never gets dropped — on either side of a conversation.