E-mail Japanese mobile phone

I sent it from my own mailbox, and the other party's mobile phone is garbled. It's better not to use it. That is, you applied for the same email address as your friend (@docomo.ne.jp), but our domestic computer has a Chinese operating system and a Japanese input method, and the other party directly has a Japanese operating system, so if you send a Japanese text message, the other party will definitely receive garbled codes. If you really want to send it, spell it in Roman ~ my personal experience ~