geekjonI'm using the Newsletter plugin, I'm noticing that the HTML in sent emails is being broken at spots causing URLs to be broken.
I've used this plugin for a while, and I remember having this same problem back on WordPress 2.9. The fix was, if I remember correctly, to modify one line in the wp-mail.php file. I know that it isn't recommended to modify core files, and one reason is that when I upgraded to WordPress 3.1, the change was overwritten.
I've searched and cannot find the instructions on how to fix this problem. It seems like it involved mail encoding. Is anyone familiair with how to fix these inconveniently inserted carriage returns in emails sent by WordPress?
