Does anyone know of a free international texting app? My current cell phone service can receive international SMS messages, but I cannot reply. I want to text friends in Pakistan and India who do not have smartphones (so apps like Viber do not help me in this). Any advice? If not a direct texting app, is there any way to recieve and reply to SMS messages via email such that a non-smartphone can reply to them? I know some networks have email addresses such as [phone number]@[network website], but I am not sure how common that is.