Newsletters: TinyMCE Valid Elements
Tips and Tricks: TinyMCE Valid Elements
Some people may notice that the TinyMCE Editor in WordPress strips out certain tags/elements automatically, which may cause an issue with the HTML code and design layout of your Newsletters.
If this is not something that you notice or are aware of, best would be to ingnore it. For those of you that find this to be a problem, you can get a plugin called TinyMCE Valid Elements
This plugin will allow you to extend what TinyMCE defines as “valid elements”. By doing so, TinyMCE will no longer remove, delete, or strip-out the additional elements and attributes that you specify.