Default Use CM email client instead of stock email client?

Hi there,

I am using stock ROM of LG, and will stick with it.

One problem for me is the email client support only 30 days email synchronization for exchange. I want unlimited because I am a heavy email user.

I know that email client from CM ROMs support unlimited email sync. How can I install the CM's mail client?

I tried using email and exchange apk from default CM10 ROM but cannot install exchange apk. I can only install email apk. But I need Exchange.

Can someone pls help me. Thanks,