How do I get Jetbrains IDE's embedded terminal to recognize ALT/Option as the Meta key?

I'm currently working in WebStorm, but also use IDEA and RubyMine. I am using the embedded terminal and would like to get the Alt/Option key to be recognized as a the meta key, or at least send key+ESC.

Now that I have moved to zsh and have more experience with this issue. Here is what I have in my .zshrc file:

### Jetbrains terminal
if [[ "$TERMINAL_EMULATOR" == "JetBrains-JediTerm" ]]; then
  bindkey -s "µ" "^E | less ^M" # Personal Alt-M shortcut
  bindkey "ƒ" forward-word
  bindkey "∫" backward-word
  bindkey "∂" kill-word
  bindkey "¬" downcase-word
  bindkey "ç" capitalize-word
  bindkey "†" transpose-words
  bindkey "≥" insert-last-word
  # bindkey "¨ " upcase-word
fi

Check out zsh list of standard Widgets