Just solved it.
Seems to be a missing feature of the iOS simulator. On my iPhone 4 it works.
Question
I updated a phonegap 2.5 app to ios7 and cordova 3.1. It runs only on iOS.
When the external links wouldn't open, I included the InAppBrowser plugin and that worked.
But how to I get the mail links (E-Mail me) to open in the native mail program? There is no such plugin.
I tried the contacts plugin. But it wasn't that.
I saw the EMail Composer plugin, but I am looking for support by cordova or a cordova plugin.
Solution 2
Just solved it.
Seems to be a missing feature of the iOS simulator. On my iPhone 4 it works.
OTHER TIPS
I used this simple html style of doing it. Works fine on ios7 and cordova 3.5 and android 4.4
<a href="mailto:abc@gmail.com" data-rel='external'>
I'm not even using any plugins such as inappbrowser, just in case you have that doubt.