Or, let us help, reach out to SaneBox support.

Webmail: Working with Mailto: links

“mailto” will not open a new compose message screen within an webmail service. However, there are ways you can fix this so webmail services will work.

(Gmail) Chrome:

  1. Go to Gmail in Chrome, & you should see a double diamond icon in the right side of the Omnibar (what Google calls the address bar).
  2. Click on that little double diamond icon & a little sheet should appear that asks “Allow mail.google.com to open all email links?”.
  3. Select Allow & then click on Done. The sheet should disappear, & so should the double diamond icon.


  1. Click on the hamburger menu (the 3 lines on top of each other, which looks just like a hamburger) in the top right of Firefox. A panel should open with a bunch of icons on it.
  2. Click on the Preferences (or Options if you’re on Windows) icon in the panel. The Preferences window should open.
  3. Click on the Applications button at the top of the Preferences window.
  4. In the Search box at the top of the Applications tab, enter mailto.
  5. You should see mailto under the Content Type column.
  6. Under the Action column, choose Use Gmail from the select list.

(If you’re on a Mac, close the Preferences window.If you’re on Windows, click the OK button to close the Options window.)


  1. You want to install the Mailto: extension.
  2. Click on the Install Now button to install it.
  3. Once it’s installed, the Mailto: Options window should immediately open in a new tab in Safari.
  4. Select the Gmail radio button & then close the Mailto: Settings tab.

If you use something else, please reach out to us here.

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