Gmail Time Formatter — Custom Dates & Productivity Tracker

Format Gmail dates as relative time or custom strings. Track email productivity locally. Private — no data ever leaves your device.

Tired of Gmail's rigid timestamp format? This extension transforms how you read email dates. Switch between relative time ("2h ago", "Yesterday"), custom date strings, or Gmail's default — all with a single click. Key features • Relative time — See "Just now", "25 min ago", or "3h ago" for recent emails. Configure when to switch to absolute dates. • Custom formats — Build your own date layout with %Y, %m, %d, %H, %M, %p, and more. Live preview in settings. • Hover reveal — Hold your cursor over any date to see the alternative format instantly. • Local productivity insights — Discover your peak email hours and busiest days. All data stays in your browser. • Privacy first — Zero tracking, zero servers, zero data collection. Everything is stored locally. How it works The extension runs inside Gmail and detects timestamp elements in your inbox and conversation view. It parses each date, then re-renders it according to your chosen format. Productivity stats are aggregated silently in local storage and displayed in a built-in dashboard. No information is transmitted externally. Who is this for • Professionals managing high-volume inboxes who need faster date scanning • Remote workers tracking communication patterns across time zones • Anyone who prefers European, ISO, or personalized date formats over Gmail's default • Privacy-conscious users who want insights without surrendering data to third parties