Secure SMS is a fully functional messaging app, able to read, write, send, and receive plain and encrypted text messages. It uses the industry standard OpenPGP protocol with 1024-bit RSA and 128-bit AES keys.
You can lock your mailbox so no one can read your stored messages
NPZ - How NPZ SMS works: * A call comes in and you can''''t respond * NPZ SMS sends your personalized text message to callers * The caller still has option of voicemail Relieve the pressure of Call and Response. You''''re at the movies and your Android rings
SM Responder - This application sends an auto reply to incoming SMS, if the sender is available in contact list. You can modify default text, enable/disable the application. By default application is enabled. Sender contact number should be in the list otherwise it won't send any message reply