Is it possible to turn on synch in Android Account

I'm working on an application that will allow a user to turn on/off synching for their exchange email account.

I am able to get the exchange account using:

Account[] accs = AccountManager.get(this).getAccountsByType("com.htc.android.mail.eas");

but the Account API doesn't seem to offer what I'm looking for. I have also found ContactsContract.Settings database table which stores synch data, but I'm not that sure where to start with that.

Any ideas?