

Or right-click and choosing "Open Link With" should give a choice of handlers on the fly. mailto: A standard left click should open it straight up in Outlook 365 (or whichever one is now set to the default). I could even set which one I wanted to be the default via its options menu (three-dot icon to the right).Ħ) Test the shiny new mail handler on a dummy email link (e.g.

For me, both were now listed under my mail handlers, instead of only gmail. Voila, the new Office 365 mailto link handler is added.ĥ) Open up the Chrome mail handler settings page (chrome://settings/handlers) in a new tab to check that the settings applied. Navigator.registerProtocolHandler("mailto", " ", "") Ĥ) The tab should pop up a dialog to ask if can open email links instead of Gmail. To do this on Mac, press cmd-opt-j, and on Windows, press ctrl-shift-j.ģ) Copy-and-paste the line below into the bottom of the javascript console on your mail tab, and press Enter: Carry out the next step on THAT tab, not this one.Ģ) Open up the javascript console from the tab. (Amazingly, 7 years on, there's still no simple option in Chrome for this!)įollow these steps to add Office 365 () as an additional mail handler to the Chrome browser directly, without an extension:ġ) In Chrome, open up in a new tab and log in to your mail. Chiming in on this old thread as well to add another solution that doesn't involve Chrome extensions.
