CosmoSia is the best simple client application for email, SMS, and MMS which can manage your mailbox easily. CosmoSia is a messaging application for sending and receiving email and SMS with the ability to serve as the default SMS handler. *CosmoSia must be set as the default SMS application in order to use SMS. CosmoSia is the best replacement for your email or SMS client app because it supports all major email services, SMS/MMS and any other IMAP4 or POP3. - Gmail - Hotmail - Yahoo mail -