I'm experimenting with HTML emails right now, but I can't seem to get it to work.
I initially tried from the GMail, but learned that I could not. I then tried with Hotmail, and that worked to a small extent (Options > Edit in HTML) but most of the formatting was missing (stripped, I assume, by Hotmail).
Then I tried using Thunderbird (Insert > HTML), and that worked... only in Thunderbird. If I opened the email in Thunderbird, then it would display right. If I opened it in Gmail or Hotmail, the aforementioned problems would occur.
I've seen problems with Gmail and sending HTML emails, but not Hotmail or Thunderbird.
Here are some images:
Normal:
Thunderbird: (normal)
Hotmail: (some formatting missing)
Gmail: (plain text, all formatting missing)
If you suspect the code might be problematic, here it is.
Does anyone understand why? Please explain.