Guys, as has been discussed in various posts... DT Register does NOT modify your email formatting or content. It contains no such code to do so.
The original post here was not about formatting though, but about images being dropped in the email. That is 100% due to the editor. Most editors by default create relative urls... meaning they drop (the editor, not DT Reg) the actual domain name portion of the url. So it works fine in the site, but an email will never work with any relative url. The editors have parameters where this can be disabled. Set your editor to NOT create relative urls.
Did you every have the question regarding removing the DEPOSIT field in the cart answered? For some reason, all events after the first event in my cart have the price under deposit and not price. Its very confusing and I would like to remove that field all together....
I have not had any luck getting a response so when I searched the forums and saw that you asked the same question, I was hoping you had gotten an answer.