If you are getting emails that look like web pages with fancy graphics and formatting then you have html enabled and literally are receiving web pages as email. It also means you are receiving tracking graphics letting the sender (spammer) know you opened the email message and that your email address is valid.
It also means you may be downloading onto your computer viruses and spyware disguised as graphics.
It also makes it more difficult to determine if an email is fake or not. Many emails appear to be from trusted companies with a link for you to click on. The link appears valid – but only if you can hover over the link with your mouse to see where it is really going can you determine if the link is real or not.
For example, an email may appear to be from your bank, such as Chase, with a link that visually says it is to chase.com. But if you hover your mouse over the link to see its actual web address you will see it is actually going to some other website for the purpose of stealing your login credentials or downloading spyware onto your computer.
Using text based email makes it easier to see this criminal activity.
I recommend going for ugly text based email due to security issues with html email
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