Use of Email Client to download Bulb Emails to PC

I use an email client to download emails from Bulb to local folders on my PC after which they are automatically removed from my ISP mail server.

I have just downloaded the monthly email reminder which says my DD will be taken in three days plus the usual submit a meter reading. However when I go to read the message in my email client all the information has disappeared and I am left with this diagram:

The same thing happened last month which I put down to a one off as this hadn’t happened in all the time I have been with Bulb.

Just wondering if anyone else uses an email client to download their monthly reminder from Bulb and if so do they encounter the same problem?