Adsense is the one of the best monetizing options for publishers, but getting an Adsense approval is a difficult task, google is very strict with their Adsense policies, I also got Adsense after 3,4 disapprovals, but when you apply for Adsense from same email, then you will not able to apply from same email account after 3 rejections, to apply again you have to create a new email account to apply.
When I got Adsense approval in 5th Attempt, I was applying with 1 month old website so they gave me different reasons of disproving my request, but after 3 months of domain purchase I got approval but from different account which I created for Adsense.
But I was not using that new email regularly for normal use, but Now I found the way by which you can change your Adsense email account to your primary email, which you use for all purposes like analytics, Feedburner Google plus and other google services.
This Option is still in beta, and this will also help to those publishers who share revenues with their writers, authors or with other partners.
Few Simple Steps
All you need to do is login into your Adsense account, click on home and go to Account Settings
Now scroll down to Access and Authorization section,
Here you will see users with Sign In access option, add your Email account to where you want to transfer your Adsense account and click on Invite Button.
And if you want to Remove Adsense from the current Adsense Login, then also give the Administrator privilege to new email.
Now Go to Gmail.com and Login to confirm the invitation request, click the confirmation link and you will find a New window of notifications.
Select or change your email subscription settings with Adsense, and click Save changes.
Now Again you will see the dashboard of Adsense but this time from new email account, now go to account settings again.
Now in Access and the Authorization section remove the administrator privileges from your old Adsense login email.
Now your new email is the only Adsense login, for that publisher ID.
You can keep both email accounts or you can also invite others if you are sharing revenue with others.