𝗪𝗵𝘆 𝗥𝗲𝗴𝗲𝘅 𝗙𝗮𝗶𝗹𝗲𝗱 𝗮𝗻𝗱 𝗟𝗟𝗠𝘀 𝗦𝗮𝘃𝗲𝗱 𝗠𝗲 I spent three days writing regex to parse emails. I wrote 400 lines of code. It worked for two formats. A third format broke everything.