The Flexus TrackMail Chrome extension puts a compact Track control on Gmail compose. Leave it on and each send registers open tracking and link click rewriting automatically.
After send, checkmarks and open counts show on tracked messages. The side panel aggregates opens, clicks, and CTR for the contact — the same story you see in Outlook.
Optional desktop notifications fire when someone opens or clicks, so you can follow up while the conversation is fresh.
Sign in with Google on trackmail.theflexus.com, load the extension, and you’re ready — one account shared with the Outlook add-in if you use both.