# fastapi-mail/fastapi_mail/schemas.py

class MessageSchema(BaseModel):
    ...
    from: Optional[EmailStr] = None
    from_name: Optional[str] = None
    ...

# fastapi-mail/fastapi_mail/fastmail.py

class FaseMail(_MailMixin):
    ...
    async def __sender(self, message: MessageSchema) -> Union[EmailStr, str]:
        sender = message.from or self.config.MAIL_FROM
        if (from_name := message.from_name or self.config.MAIL_FROM_NAME) is not None:
            return formataddr((from_name, sender))
        return sender
    ...