docs: function EmailForm(options) {
  
          /**
           * ### EmailForm.onsubmit
           *
           * Options passed to `getValues` when the submit button is pressed
           *
           * @see Feedback.getValues
           */
          if (!options.onsubmit) {
              this.onsubmit = {
                  emailOnly: true,
                  send: true,
                  updateUI: true
              };
          }
          else if ('object' === typeof options.onsubmit) {
              this.onsubmit = options.onsubmit;
          }
          else {
              throw new TypeError('EmailForm constructor: options.onsubmit ' +
                                  'must be string or object. Found: ' +
                                  options.onsubmit);
          }
  
          /**
           * ### EmailForm._email
           *
           * Internal storage of the value of the email
           *
           * This value is used when the form has not been created yet
           *
           * @see EmailForm.createForm
           */
          this._email = options.email || null;
  
          /**
           * ### EmailForm.attempts
           *
           * Invalid emails tried
           */
          this.attempts = [];
  
          /**
           * ### EmailForm.timeInput
           *
           * Time when the email was inserted (first character, last attempt)
           */
          this.timeInput = null;
  
          /**
           * ### EmailForm.formElement
           *
           * The email's HTML form
           */
          this.formElement = null;
  
          /**
           * ### EmailForm.inputElement
           *
           * The email's HTML input form
           */
          this.inputElement = null;
  
          /**
           * ### EmailForm.buttonElement
           *
           * The email's HTML submit button
           */
          this.buttonElement = null;
  
          /**
           * ### EmailForm.setMsg
           *
           * If TRUE, a set message is sent instead of a data msg
           *
           * Default: FALSE
           */
          this.setMsg = !!options.setMsg || false;
      }