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Have set Gmail as application for mailto, but mailto: links don't work.

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I'm using FF 22 on a MacBook Pro running OS X 10.7.5. In Preferences>Applications I have set the app for mailto as Gmail. However, mailto links refuse to work. They generally open a blank tab. Gmail is also set as the default mail application for the system. That didn't help.

I'm using FF 22 on a MacBook Pro running OS X 10.7.5. In Preferences>Applications I have set the app for mailto as Gmail. However, mailto links refuse to work. They generally open a blank tab. Gmail is also set as the default mail application for the system. That didn't help.

Chosen solution

Try to delete the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can check the network.protocol-handler.external.mailto prefs on the about:config page.

If network.protocol-handler.external.mailto prefs are user set (bold) then right-click and Reset them to the default value.

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Chosen Solution

Try to delete the mimeTypes.rdf file in the Firefox profile folder to reset all file actions.

You can check the network.protocol-handler.external.mailto prefs on the about:config page.

If network.protocol-handler.external.mailto prefs are user set (bold) then right-click and Reset them to the default value.

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That was fast! Fortunately, I didn't need to mess with the profiles; resetting the prefs on about:config did it. Thanks so much, folks!