HTML customer emails not working

[Sonnie]

There is the remote possibility that your host uses 7bit mime for emails. Which would also explain why your admin emails come through fine.(Admin defaults to 7bit).

To test that, edit the 2 email_use_8bit.php files and change the define from 8bit to 7bit.

Rgds,

I contacted support at my host, who stated they use 8bit mime. However I edited the files above, the results were the same. Emails sent as text.