Is it permissible to take back one's wife after divorcing her the first time with a single pronouncement, and the second time with three pronouncements in one utterance and via a mobile phone message? And what is the ruling concerning this wife now?

A man's divorce of his wife by a written text message takes effect if he intended to issue it. If he intended to issue it three times in a single instance, then it counts as three divorces according to the majority of scholars. Consequently, his wife becomes unlawful for him and will not be permissible for him until she marries another husband in a valid marriage and he then divorces her after consummation. Some scholars, including Shaykh al-Islam Ibn Taymiyyah, are of the view that divorcing three times in a single instance counts as one divorce. In this case, the husband is permitted to reconcile with his wife as long as she is still within her waiting period ('iddah).