SentSignal – Email Tracker for Gmail

Free unlimited email tracking for Gmail with open history, private notes, synced folders, and reusable templates.

SentSignal is an email tracker for Gmail that adds open tracking, private mail notes, folders, follow-up reminders, and reusable templates directly to Gmail. Main features: • Track email opens from the Gmail Send button • Review open counts and exact timestamps in the side panel • Add a private note beside any visible Gmail message • Organize messages in SentSignal folders without moving the original email • Save text, email, image, and banner templates • Connect Google once to restore SentSignal data across reinstalls Free includes unlimited open tracking, 2 folders, and 3 templates. Pro adds more organization space, up to 50 templates including up to 10 images, and control over the SentSignal badge on tracked email. SentSignal does not request Gmail mailbox API access or upload complete inbox contents. SentSignal is independent and is not affiliated with, sponsored by, or endorsed by Google. Gmail is a trademark of Google LLC.